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Antoni Margalida
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Antoni Margalida

   Biography

Ph.D, of Science (Ecology and Evolution) University of Bern

University of Bern - Institute of Ecology and Evolution
 
Bern,    Switzerland
Email: antoni.margalida@iee.unibe.ch


   Research Interests

Behavioural ecology and conservation biology of raptors

Species of Interest: 
  • Aquila adalberti
  • Gypaetus barbatus
  • Neophron percnopterus
  • Aegypius monachus
  • Gyps fulvus


   Publications

BOOKS:

Margalida, A., D. García, and J. Bertran (eds.). 2012. Los buitres en Cataluña: biología, conservación y síntesis bibliográfica [The vultures of Catalonia: biology, conservation and bibliographic synthesis]. GEPT, El Pont de Suert, Spain. (In Catalán and Spanish).

Donázar, J.A., A. Margalida, and D. Campíon (eds.). 2009. Vultures, feeding stations and sanitary legislation: a conflict and its consequences from the perspective of conservation biology. Munibe 29 (Suppl.). Sociedad de Ciencias Aranzadi, San Sebastián, Spain. 552 pp. (In Spanish and English)

González, L.M., and A. Margalida (eds.). 2008. Conservation biology of the Spanish Imperial Eagle (Aquila adalberti). Organismo Autónomo Parques Nacionales, Madrid. 604 pp. (In Spanish and English)

Margalida, A.M., and R. Heredia (eds.). 2005. Biología de la conservación del Quebrantahuesos (Gypaetus barbatus) en España [Biology and conservation of the Bearded Vulture (Gypaetus barbatus) in Spain]. Organismo Autónomo Parques Nacionales, Madrid. 378 pp. (In Spanish)

Sanmartí R., J. Canut, A. Margalida, L.X. Toldrá, A. Petit, A. Dalmau, and T. Aparicio. 2005. Atlas de las aves nidificantes del Parque Nacional de Aigüestortes i Estany de Sant Maurici y su entorno. Organismo Autónomo Parques Nacionales, Madrid. 271 pp. (In Spanish)

Margalida, A., and D. Garcia. 2002. Recovery plan for the Bearded Vulture in Catalonia: biology and conservation. Documents dels Quaderns de Medi Ambient. Generalitat de Catalunya, 7, Departament de Medi Ambient. 163 pp. (In Catalan, Spanish and English)

PAPERS:

Margalida, A., J.R. Benítez, J.A. Sánchez-Zapata, E. Ávila, R. Arenas, and J.A. Donázar. 2012. Long-term relationships between diet and breeding success in a declining population of Egyptian Vulture Neophron percnopterus. Ibis 154:184-188.

Margalida, A., M. Carrete, J.A. Sánchez-Zapata, and J.A. Donázar. 2012. Good news for European vultures. Science 335:284.

Marín, A.B., and A. Margalida. 2012. Distinguishing Bearded Vulture activities within archaeological contexts: identification guidelines. International Journal of Osteoarchaeology doi:10.1002/oa.1279.

Moreno-Opo, R., A. Margalida, F. García, A. Arredondo, C. Rodríguez-Vigal, and L.M. González. 2012. Linking sanitary and ecological requirements in the management of avian scavengers: guidelines for limiting the access of non-target species to supplementary feeding sites. Biodiversity and Conservation 21:1673-1685.       pdf

Moreno-Opo, R., M. Fernández-Olalla,, A. Margalida, A. Arredondo, and F. Guil. 2012. Effect of methodological and ecological approaches on results of habitat selection of a long-lived vulture. PLoS ONE 7:e33469.

Perez-García, J.M., A. Margalida, I. Afonso, E. Ferreiro, A. Gardiazábal, F. Botella, and J.A. Sánchez-Zapata. 2012. Interannual home-range variation, territoriality and overlap in breeding Bonelli’s Eagles (Aquila fasciata) tracked by GPS satellite tellemetry. Journal of Ornithology DOI: 10.1007/s10336-012-0871-x.       pdf

Cabezón, O., I. García-Bocanegra, R. Molina-López, I. Marco, J.M. Blanco, U. Hofle, A. Margalida, E. Bach-Raich, L. Darwich, I. Echevarría, E. Obon, M. Hernández, S. Lavín, J.P. Dubery, and S. Almería. 2011. Seropositivity and risk factors associated with Toxoplasma gondii infection in wild birds from Spain. PLoS ONE 6:e29549.       pdf

Cardona, M., M.A. Colomer, A. Margalida, A. Palau, I. Perez-Hurtado, M.J. Perez-Jimenez, and D. Sanuy. 2011. A computational modelling for real ecosystems based on P systems. Natural Computing 10:39-53.       pdf

Colomer, M.A., A. Margalida, D. Sanuy, & M.J. Pérez-Jiménez. 2011. A bio-inspired computing model as a new tool for modelling ecosystems: the avian scavengers as a case study. Ecological Modelling 222:34-47.       pdf

Guil, F., M. Fernández-Olalla, R. Moreno-Opo, I. Mosqueda, M.E. García, A. Aranda, A. Arredondo, J. Guzmán, J. Oria, L.M. González, and A. Margalida. 2011. Minimising mortality in endangered raptors due to power lines: the importance of spatial aggregation to optimize the application of mitigation measures. PLoS ONE 6:e28212.       pdf

Margalida, A., D. Campión, and J.A. Donázar. 2011. European vultures’ altered behaviour. Nature 480:457.

Margalida, A., M.A. Colomer, and D. Sanuy. 2011. Can wild ungulate carcasses provide enough biomass to maintain avian scavenger populations? An empirical assessment using a bio-inspired computational model. PLoS ONE 6:e20248.

Margalida, A., and D. García. 2011. Intraspecific nest competition in the Bearded Vulture Gypaetus barbatus in Catalonia (NE Spain). Ardeola 58:303-308.

Margalida, A., R. Moreno-Opo, B.E. Arroyo, and A. Arredondo. 2011. Reconciling the conservation of an endangered species with an economically important anthropogenic activity: interactions between cork exploitation and the Cinereous Vulture Aegypius monachus in Spain. Animal Conservation 14:167-174.

Margalida, A., D. Oro, A. Cortés-Avizanda, R. Heredia, and J.A. Donázar. 2011. Misleading population estimates: biases and consistency of visual surveys and matrix modelling in the endangered bearded vulture. PLoS ONE 6:e26784.       pdf

Cardona, M., M.A. Colomer, A. Margalida, I. Pérez Hurtado, M.J. Pérez-Jiménez, and D. Sanuy. 2010. A P System based model of an ecosystem of some scavenger birds. Lecture Notes in Computer Science 5957:182-195.       pdf

Colomer, M.A., S. Lavin, I. Marco, A. Margalida, I. Pérez-Hurtado, M.J. Pérez-Jiménez, D. Sanuy, E. Serrano, and I. Valencia-Cabrera. 2010. Modeling population growth of Pyrenean Chamois (Rupicapra p. pyrenaica) by using P-systems. Lecture Notes in Computer Science 6501:144-159.       pdf

Hernández, M., and A. Margalida. 2010. Hematology and blood chemistry reference values and age-related changes in wild Bearded Vultures (Gypaetus barbatus). Journal of Wildlife Diseases 46:390-400.

Margalida, A.. 2010. Supplementary feeding during the chick-rearing period is ineffective in increasing the breeding success in the Bearded Vulture (Gypaetus barbatus). European Journal of Wildlife Research 56:673-678.       pdf

Margalida, A., and J. Bertran. 2010. Copulatory behaviour in the colonial Eurasian Griffon Vulture Gyps fulvus. Journal of Ethology 28:179-182.       pdf

Margalida, A., J.A. Donázar, M. Carrete, and J.A. Sánchez-Zapata. 2010. Sanitary versus environmental policies: fitting together two pieces of the puzzle of European vulture conservation. Journal of Applied Ecology 47: 931-935.       pdf

Margalida, A., D. García, R. Heredia, and J. Bertran. 2010. Video-monitoring helps to optimize the rescue of second-hatched chicks in the endangered Bearded Vulture (Gypaetus barbatus). Bird Conservation International 20:55-61.       pdf

Moreno-Opo, R., A. Margalida, Á Arrendondo, F. Guil, M. Martín, R. Higuero, C. Soria, and J. Guzmán. 2010. Factors influencing the presence of the Cinereous Vulture Aegypius monachus at carcasses: food preferences and implications for the management of supplementary feeding sites. Wildlife Biology 16:25-34.       pdf

Bertran, J., A. Margalida, and B.E. Arroyo. 2009. Agonistic behaviour and sexual conflict in atypical reproductive groups: the case of Bearded Vulture polyandrous trios. Ethology 115:429-438.       pdf

Zuberogoitia, I., J.E. Martinez, A. Margalida, I. Gómez, A. Azkona, and J.A. Martinez. 2010. Reduced food availability induces behavioural changes in Griffon Vulture. Ornis Fennica 87:52-60.       pdf

Cardona, M., M.A. Colomer, M.J. Pérez-Jiménez, D. Sanuy, and A. Margalida. 2009. Modeling ecosystems using P Systems: the Bearded Vulture, a case study. Lecture Notes in Computer Science 5391:137-156       pdf

Donázar, J.A., A. Margalida, M. Carrete, and J.A. Sánchez-Zapata. 2009. Too sanitary for vultures. Science 326:664.

Ellis, D.H., T. Craig, E. Craig, S. Postupalsky, C.T. LaRue, R.W. Nelson, D.W. Anderson, C.J. Henny, J. Watson, B.A. Millsap, J.W. Dawson, K.L. Cole, E.M. Martin, A. Margalida, and P. Kung. 2009. Unusual raptor nests around the world. Journal of Raptor Research 43:175-198.        pdf

Fernández, M., J. Oria, R. Sánchez, L.M. González, and A. Margalida. 2009. Space use of adult Spanish Imperial Eagles Aquila adalberti. Acta Ornithologica 44:17-26.       pdf

Galvan, I., J.J. Negro, G.R. Bortolotti, and A. Margalida. 2009. On silver wings: a fragile structural mechanism increases plumage conspicuousness. Journal of Avian Biology 40:475-480.       pdf

Hernández, M., and A. Margalida. 2009. Poison-related mortality effects in the endangered Egyptian Vulture (Neophron percnopterus) population in Spain: conservation measures. European Journal of Wildlife Research 55:415-423.       pdf

Hernández, M., and A. Margalida. 2009. Assessing the risk of lead exposure for the conservation of the endangered Pyrenean Bearded Vulture (Gypaetus barbatus) population. Environmental Research 109:837-842.

Margalida, A., J. Bertran, and R. Heredia. 2009. Diet and food preferences of the endangered Bearded Vulture Gypaetus barbatus: a basis for their conservation. Ibis 151:235-243.       pdf

Margalida, A., J.A. Sánchez-Zapata, S. Eguía, A.B. Marín-Arroyo, F.J. Hernández, and J. Bautista. 2009. Assessing the diet of breeding Bearded Vultures (Gypaetus barbatus) in mid-20th century in Spain: a comparison to recent data and implications for conservation. European Journal of Wildlife Research 55:443-447.       pdf

Ortega, E., S. Mañosa, A. Margalida, R. Sánchez, J. Oria, and L.M. González. 2009. A demographic description of the recovery of the vulnerable Spanish Imperial Eagle Aquila adalberti. Oryx 43:113-121.

Sánchez, R., A. Margalida, L.M. González, and J. Oria. 2009. Temporal and spatial differences in the feeding ecology of the Spanish Imperial Eagle Aquila adalberti during the non-breeding season: effects of the rabbit population crash. Acta Ornithologica 44:53-58.       pdf

Bortolotti, G.R., L.M. González, A. Margalida, R. Sánchez, and J. Oria. 2008. Positive assortative pairing by plumage colour in Spanish Imperial Eagles. Behavioural Processes 78:100-107.       pdf

González, L.M., J. Oria, R. Sánchez, A. Margalida, A. Aranda, L. Prada, J. Caldera, and J.I. Molina. 2008. Status and habitat changes in the endangered Spanish Imperial Eagle Aquila adalberti population during 1974-2004: implications for its recovery. Bird Conservation International 18:242-259.       pdf

Hernández, M., and A. Margalida. 2008. Pesticide abuse in Europe: effects on the Cinereous Vulture (Aegypius monachus) population in Spain. Ecotoxicology 17:264-272.       pdf

Margalida, A. 2008. Bearded Vultures (Gypaetus barbatus) prefer fatty bones. Behavioural Ecology and Sociobiology 63:187-193.       pdf

Margalida, A. 2008. Presence of bone remains in the ossuaries of Bearded Vultures Gypaetus barbatus: storage or nutritive rejection? Auk 125:560-564.       pdf

Margalida, A., J.A. Donázar, J. Bustamante, F. Hernández, and M. Romero-Pujante. 2008. Application of a predictive model to detect long-term changes in nest-site selection in the Bearded Vultures: conservation in relation to territory shrinkage. Ibis 150:242-249.       pdf

Margalida, A., R. Heredia, M. Razin, and M. Hernández. 2008. Sources of variation in mortality of the Bearded Vulture Gypaetus barbatus in Europe. Bird Conservation International 18:1-10.       pdf

Margalida, A., S. Mañosa, L.M. González, E. Ortega, J. Oria, and R. Sánchez. 2008. Breeding non-adults and age effects on productivity in the Spanish Imperial Eagles Aquila adalberti. Ardea 96:173-180.       pdf

Margalida, A., J.J. Negro, and I. Galván. 2008. Melanin-based color variation in the Bearded Vulture suggest a thermoregulatory function. Comparative Biochemistry and Physyology A 149:87-91.       pdf

Oro, D., A. Margalida, M. Carrete, R. Heredia, and J.A. Donázar. 2008. Testing the goodness of supplementary feeding to enhance population viability in an endangered vulture. PLoS ONE 3:e4084.       pdf

Sánchez, R., A. Margalida, L.M. González, and J. Oria. 2008. Biases in diet sampling methods in the Spanish Imperial Eagle (Aquila adalberti). Ornis Fennica 85:82-89.       pdf

Antor, R.J., A. Margalida, H. Frey, R. Heredia, L. Lorente, and J.A. Sesé. 2007. Age of first breeding in wild and captive populations of Bearded Vultures (Gypaetus barbatus). Acta Ornithologica 42:114-118.       pdf

González, L.M., B.E. Arroyo, A. Margalida, J. Oria, and R. Sánchez. 2007. Can buffer zones have detrimental effects on conservation of Spanish Imperial Eagle Aquila adalberti? Animal Conservation 10:295-296.

González, L.M., A. Margalida, S. Mañosa, R. Sánchez, and J. Oria. 2007. Causes and spatio-temporal variations of non-natural mortality in the globally endangered Spanish Imperial Eagle (Aquila adalberti) during a recovery period. Oryx 41:495-502.       pdf

Margalida, A., D. García, and A. Cortés-Avizanda. 2007. Factors influencing breeding density of Bearded Vultures, Egyptian Vultures and Eurasian Griffon Vultures in Catalonia (NE Spain): management implications. Animal Biodiversity & Conservation 30:189-200.       pdf

Margalida, A., L.M. González, R. Sánchez, J. Oria, and L. Prada. 2007. Parental behaviour of Spanish Imperial Eagles Aquila adalberti: sexual differences in a moderately dimorphic raptor. Bird Study 54:112-119.       pdf

Margalida, A., L.M. González, R. Sánchez, J. Oria, L. Prada, J. Caldera, A. Aranda, and J.I. Molina. 2007. A long-term scale study of the breeding biology of Spanish Imperial Eagle (Aquila adalberti). Journal of Ornithology 148:309-322.       pdf

Margalida, A., S. Mañosa, J. Bertran, and D. García. 2007. Biases in studying the diet of the Bearded Vulture. Journal of Wildlife Management 71:1621-1625.

Bertran, J., and A. Margalida. 2006. Reverse mounting and copulatory behaviour in polyandrous trios of Bearded Vulture. Wilson Journal of Ornithology 118:254-256.

Carrete, M., J.A. Donázar, and A. Margalida. 2006. Density-dependent productivity depression in Pyrenean Bearded Vultures: implications for conservation. Ecological Applications 16:1674-1682.

Carrete, M., J.A. Donázar, A. Margalida, and J. Bertran. 2006. Linking ecology, behaviour and conservation: does habitat saturation changes mating system in Bearded Bultures? Biology Letters 2:24-27.       pdf

González, L.M., B.E. Arroyo, A. Margalida, R. Sánchez, and J. Oria. 2006. Effect of human activities on behaviour and success of breeding Spanish Imperial Eagles Aquila adalberti. Animal Conservation 9:85-93.

González, L.M., A. Margalida, J. Oria, and R. Sánchez. 2006. Supplementary feeding as an effective tool to improving breeding success in the Spanish Imperial Eagle (Aquila adalberti). Biological Conservation 129:477-486.       pdf

González, L.M., A. Margalida, R. Sanchez, and J. Oria. 2006. Cooperative breeding in the Spanish Imperial Eagle: a case of polyandry with reversed sexual behaviour? Ibis 148:159-163.       pdf

González, L.M., J. Oria, A. Margalida, R. Sánchez, L. Prada, J. Caldera, A. Aranda, and J.I. Molina. 2006. Effective natal dispersal distance and age of maturity in the threatened Spanish Imperial Eagle (Aquila adalberti): conservation implications. Bird Study 53:285-293.

Margalida, A. 2006. The use of solar-powered transmitting video cameras for monitoring the breeding biology of Bearded Vultures Gypaetus barbatus. Pp. 138-145 in D.C. Houston and S. Piper (eds.), Proceedings of the International Conference on Conservation and Management of Vulture Populations. Natural History Museum of Crete and WWF Greece, Thessaloniki, Greece.

Margalida, A., B.E. Arroyo, G.R. Bortolloti, and J. Bertran. 2006. Prolonged incubation in raptors: adaptive or nonadaptive behaviour? Journal of Raptor Research 40:159-163.       pdf

Margalida, A., and J. Bertran. 2006. Prolonged incubation of non-viable eggs in the Bearded vulture Gypaetus barbatus. Acta Ornithologica 41:181-184.       pdf

Margalida, A., J. Boudet, S. Ecolan, J-M. Martinez, R. Heredia, and J. Bertran. 2006. A solar-powered transmitting video camera for monitoring cliff-nesting raptors. Journal of Field Ornithology 77:7-12.       pdf

Bertran, J., and A. Margalida. 2005. Interactive behaviour between Bearded Vultures Gypaetus barbatus and Common Ravens Corvus corax: predation risk and kleptoparasitism. Ardeola 51:269-274.       pdf

Margalida, A. and J. Bertran. 2005. Territorial defence behaviour of Bearded Vulture Gypaetus barbatus towards conspecifics and heterospecifics. Ethology Ecology & Evolution 17:51-63.

Margalida, A., J. Bertran, and J. Boudet. 2005. Assessing the diet of nestling Bearded Vultures: a comparison between direct observation methods. Journal of Field Ornithology 76:40-45.       pdf

Ruiz-Olmo, J., A. Margalida, and A. Batet. 2005. Use of small rich patches by Eurasian Otter (Lutra lutra L.) females and cubs during the predispersal period. Journal of Zoology, London 265:339.346.       pdf

Bertran, J., and A. Margalida. 2004. Do female control matings in polyandrous Bearded Vulture (Gypaetus barbatus) trios? Ethology, Ecology & Evolution 16:181-186.

Margalida, A., J. Bertran, J. Boudet, and R. Heredia. 2004. Hatching asynchrony, sibling aggression and cannibalism in the Bearded Vulture (Gypaetus barbatus). Ibis 146:386-393.       pdf

Margalida, A., and J. Bertran. 2003. Inter and intraspecific kleptoparasitic interactions of the Bearded Vulture Gypaetus barbatus at nesting areas. Journal of Raptor Research 37:157-169.       pdf

Margalida, A., J. Canut, and D. García. 2003. Territory change and nest site switching in the Bearded Vulture (Gypaetus barbatus). Journal of Raptor Research 37:340-344.       pdf

Margalida, A., D. García, J. Bertran, and R. Heredia. 2003. Breeding biology and success of the Bearded Vulture (Gypaetus barbatus) in the eastern Pyrenees. Ibis 145:244-252.       pdf

Margalida, A., and J. Boudet. 2003. Dynamics and temporal variation in age structure at a communal roost of Egyptian Vultures (Neophron percnopterus) in northeastern Spain. Journal of Raptor Research 37:252-256.       pdf

Bertran, J., and A. Margalida. 2003. Male-male copulations in polyandrous Bearded Vultures (Gypaetus barbatus): an unusual mating system in raptors. Journal of Avian Biology 34:334-338.       pdf

Beltran, J., and A. Margalida. 2002. Territorial behaviour of the Bearded Vulture (Gypaetus barbatus) in response to the Griffon Vulture (Gyps fulvus). Journal of Field Ornithology 73:86-90.       pdf

Bertran, J., and A. Margalida. 2002. Social organization of a trio of Bearded Vulture (Gypaetus barbatus): sexual and parental roles. Journal of Raptor Research 36:65-69.       pdf

Margalida, A. 2002. Late egg-laying and fledgling in a polyandrous trio of Bearded Vultures Gypaetus barbatus in the Pyrenees. Revista Catalana d’Ornitologia 19:35-37.       pdf

Margalida, A. 2002. Egg-laying and fledging delayed in a polyandrous trio of Bearded Vulture Gypaetus barbatus. Revista Catalana d’Ornitologia 19:35-37.

Margalida, A., and J. Bertran. 2002. First replacement clutch by a polyandrous trio of Bearded Vulture (Gypaetus barbatus) in the Spanish Pyrenees. Journal of Raptor Research 36:154-155.

Margalida, A., J. Boudet, R. Heredia, and J. Bertran. 2002. Videocámaras para la monitorización de la nidificación del Quebrantahuesos (Gypaetus barbatus) [Videocameras for monitoring the nesting of the Bearded Vulture (Gypaetus barbatus]. Ecología 16:325-333. (In Spanish)

Margalida, A., and R. Heredia. 2002. Interspecific interaction between the Lammergeier Gypaetus barbatus and the Black Vulture Aegypius monachus: predation or kleptoparasitism? Sandgrouse 24:138-139.

Margalida, A., M. Bartoli, and J. Boudet. 2001. Laying date delayed and clutch replacement in the Bearded Vulture (Gypaetus barbatus) in the Pyrenees. Vulture News 44:27-30.

Margalida, A., and J. Bertran. 2001. Function and temporal variation in the use of ossuaries by Bearded Vultures (Gypaetus barbatus) during the nestling period. Auk 118:785-789.       pdf

Negro, J.J., A. Margalida, M.J. Torres, J.M. Grande, F. Hiraldo, and R. Heredia. 2002. Iron oxides in the plumage of Bearded Vultures: medicine or cosmetics? Animal Behaviour 63:F5-F7.       pdf

Margalida, A., and J. Bertran. 2000. Nest-building behaviour of the Bearded Vulture (Gypaetus barbatus). Ardea 88:259-264.       pdf

Margalida, A., and J. Bertran. 2000. Breeding behaviour of the Bearded Vulture (Gypaetus barbatus): minimal sexual differences in parental activities. Ibis 142:225-234.       pdf

Negro, J.J., and A. Margalida. 2000. How Bearded Vultures (Gypaetus barbatus) acquire their orange colouration: a comment on Xirouchakis (1998). Journal of Raptor Research 34:62-63.       pdf

Bertran, J., and A. Margalida. 1999. Copulatory behavior of the Bearded Vulture. Condor 101:161-164.       pdf

Negro, J.J., A. Margalida, F. Hiraldo, and R. Heredia. 1999. The function of the cosmetic colouration of Bearded Vultures: when art imitates life. Animal Behaviour 58:F14-F17       pdf

Margalida, A., and D. García. 1999. Nest use, interspecific relationships and competition for nests in the Bearded Vulture (Gypaetus barbatus) in the Pyrenees: influence on breeding success. Bird Study 46:224-229.       pdf

Ruiz-Olmo, J., J. Jiménez, J., and A. Margalida. 1998. Capture and consumption of prey behaviour of the Otter (Lutra lutra) in Mediterranean freshwater of the Iberian Peninsula. Galemys 10:209-226.

Bertran, J., and A. Margalida. 1997. Griffon Vultures (Gyps fulvus) ingesting bones in the ossuaries of Bearded Vultures (Gypaetus barbatus). Journal of Raptor Research 31:287-288.

Margalida, A. 1997. Aparición de un dormidero comunal de Alimoche (Neophron percnopterus) en Cataluña (NE España) [A communal roost of Egyptian Vultures (Neophron percnopterus) in Catalonia (NE Spain]. Butlletí del Grup Català d’Anellament 14:73-77. (In Spanish with English summary))

Margalida, A. 1997. Consumición de pequeños cadáveres por parte de Buitres leonados (Gyps fulvus) en Cataluña [Consumption of small carcasses by Griffon Vultues (Gyps fulvus) in Catalonia]. Butlletí del Grup Català d’Anellament 14:55-57. (In Spanish with English summary)

Margalida, A., and J. Bertran. 1997. Dieta y selección de alimento de una pareja de Quebrantahuesos (Gypaetus barbatus) en los Pirineos durante la crianza [Diet and food selection of a pair of Bearded Vultures (Gypaetus barbatus) during the breeding season]. Ardeola 44:193-199. (In Spanish with English summary)       pdf

Margalida, A., J. Bertran, D. García, and R. Heredia. 1997. Observaciones sobre el período de incubación del Quebrantahuesos (Gypaetus barbatus) en los Pirineos [Observation on the incubation period of the Bearded Vulture (Gypaetus barbatus) in the Pyrenees]. Ecología 11:439-444. (In Spanish)

Margalida, A., D. García, and J. Bertran. 1997. A possible case of a polyandrous quartet in the Bearded Vulture (Gypaetus barbatus). Ardeola 44:109-111.       pdf

Margalida, A., D. García, and R. Heredia. 1997. Estimación de la disponibilidad trófica para el Quebrantahuesos (Gypaetus barbatus) en Catalunya (NE España) e implicaciones sobre su conservación [Estimation of the Bearded Vulture's (Gypaetus barbatus) trophic resources in Catalonia (NE Spain) and implications about its conservation]. Doñana, Acta Vertebrata 24:235-243. (In Spanish with English summary)

Bertran, J., and A. Margalida. 1996. Patrón anual de observaciones de Quebrantahuesos (Gypaetus barbatus) de diferentes grupos de edad en los sectores de nidificación. Alauda 64: 171-178. (In French with English summary)

Garcia, D., A. Margalida, X. Parellada, and J. Canut. 1996. Evolución y parámetros reproductores del Quebrantahuesos (Gypaetus barbatus) en Catalunya (NE España) [Evolution and breeding parameters of the Bearded Vulture (Gypaetus barbatus) in Catalonia (NE Spain)]. Alauda 64:339-238. (In Spanish with English summary)

Margalida, A., and J. Bertran. 1996. Quebrantahuesos (Gypaetus barbatus) ingiriendo sus propias egagrópilas. Butlletí del Grup Català d’Anellament 13:49-51. (In Spanish)

BOOK CHAPTERS:

Margalida, A. 2011. Espiando al quebrantahuesos [Spying on the Bearded Vulture]. Pp. 5-7 in M. Lacasa (ed.), El libro de las rapaces [The book of raptors]. Editorial Photodigiscoping, Barcelona. (In Spanish)

Carrete, M., A. Margalida, D. Oro, and J.A. Donázar. 2009. Consecuencias poblaciones de los comederos para aves carroñeras: el quebrantahuesos Gypaetus barbatus en el Pirineo español [Population consequences of feeding stations for scavengers: the Bearded Vulture Gypaetus barbatus in the Spanish Pyrenees]. Pp. 226-253 in J.A. Donázar, A. Margalida, and D. Campión (eds.), Buitres, muladares y legislación: perspectivas de un conflicto y sus consecuencias desde la Biología de la Conservación [Vultures, garbage dumps, and legislation: perspectives on a conflict and its consequences to conservation biology]. Munibe Ciencias Naturales. Donostia, Spain. (In Spanish)

Donázar, J.A., and A. Margalida. 2009. Los buitres europeos en el filo de la navaja: consecuencias de los cambios en las prácticas ganaderas y en la legislación sanitaria [European vultures on the razor's edge: consequences of livestock practices and the sanitary legislation]. Pp. 526-551 in J.A. Donázar, A. Margalida, and D. Campión (eds.), Buitres, muladares y legislación: perspectivas de un conflicto y sus consecuencias desde la Biología de la Conservación [Vultures, garbage dumps, and legislation: perspectives on a conflict and its consequences to conservation biology]. Munibe Ciencias Naturales. Donostia, Spain. (In Spanish).

García, D., and A. Margalida. 2009. Estatus, distribución y parámetros reproductores de la población de aves carroñeras en Cataluña [Status, distribution and breeding parameters of the population of avian scavengers in Catalonia]. Pp. 116-135 in J.A. Donázar, A. Margalida, and J. Campión (eds.), Buitres, muladares y legislación: perspectivas de un conflicto y sus consecuencias desde la Biología de la Conservación [Vultures, garbage dumps, and legislation: perspectives on a conflict and its consequences to conservation biology]. Munibe Ciencias Naturales. Donostia, Spain. (In Spanish)

García, D., and A. Margalida. 2009. El alimoche común en Cataluña [The Egyptian Vulture in Catalonia]. Pp. 96-103 in J.C. Del Moral (ed.), El alimoche común en España: población reproductora en 2008 y método de censo [The Egyptian Vulture in Catalonia: breeding population in 2008 and census method]. SEO/BirdLife. Madrid. (In Spanish)

García, D., and A. Margalida. 2009. El buitre leonado en Cataluña [The Griffon Vulture in Catalonia]. Pp. 105-114 in J.C. Del Moral (ed.), El buitre leonado en España: Población reproductora en 2008 y método de censo [The Egyptian Vulture in Spain; breeding population in 2008 and census method]. SEO/BirdLife. Madrid. (In Spanish)

Margalida, A., and D. Campión. 2009. Interacciones agresivas entre buitres leonados (Gyps fulvus) y ganado doméstico: aspectos ecológicos y económicos de un conflicto emergente [Aggressive interactions between Griffon Vultures (Gyps fulvus) and domestic livestock: ecological aspects and economics of an emerging conflict]. Pp. 476-491 in J.A. Donázar, A. Margalida, and D. Campión (eds.), Buitres, muladares y legislación: perspectivas de un conflicto y sus consecuencias desde la Biología de la Conservación [Vultures, garbage dumps, and legislation: perspectives on a conflict and its consequences to conservation biology]. Munibe Ciencias Naturales. Donostia. (In Spanish)

Bortolloti, G.R., L.M. González, A. Margalida, R. Sánchez, and J. Oria. 2008. Emparejamiento concordante positivo por el color del plumaje en el águila imperial ibérica. Pp. 233-246 in L.M. González and A. Margalida (eds.), Biología de la conservación del águila imperial ibérica (Aquila adalberti) [Conservation biology of the Spanish Imperial Eagle (Aquila adalberti)]. Organismo Autónomo Parques Nacionales. Ministerio de Medio Ambiente y Medio Rural y Marino. Madrid. (In Spanish)

Fernández, M., J. Oria, R. Sánchez, L.M. González, and A. Margalida. 2008. Uso del espacio y comportamiento territorial en el águila imperial ibérica [Spatial use and territorial behavior in the Spanish Imperial Eagle]. Pp. 187-214 in L.M. González and A. Margalida (eds.), Biología de la conservación del águila imperial ibérica (Aquila adalberti) [Conservation biology of the Spanish Imperial Eagle (Aquila adalberti)]. Organismo Autónomo Parques Nacionales. Ministerio de Medio Ambiente y Medio Rural y Marino. Madrid. (In Spanish)

González, L.M., B.E. Arroyo, A. Margalida, R. Sánchez, and J. Oria. 2008. Efecto de las actividades humanas en el comportamiento reproductor del águila imperial ibérica [Effect of human activities on breeding behavior of the Spanish Imperial Eagle]. Pp. 453-469 in L.M. González and A. Margalida (eds.), Biología de la conservación del águila imperial ibérica (Aquila adalberti) [Conservation biology of the Spanish Imperial Eagle Aquila adalberti]. Organismo Autónomo Parques Nacionales. Ministerio de Medio Ambiente y Medio Rural y Marino. Madrid. (In Spanish)

González, L.M., A. Margalida, S. Mañosa, R. Sánchez, J. Oria, J.I. Molina, J. Caldera, J. Caballero, A. Aranda, and L. Prada. 2008. Causas y variaciones espacio-temporales de la mortalidad no-natural del águila imperial ibérica durante 1989-2004 [Causes and spatio-temporal variations in non-natural mortality of the Spanish Imperial Eagle during 1989-2004]. Pp. 427-440 in L.M. González and A. Margalida (eds.), Biología de la conservación del águila imperial ibérica (Aquila adalberti) [Conservation biology of the Spanish Imperial Eagle (Aquila adalberti)]. Organismo Autónomo Parques Nacionales. Ministerio de Medio Ambiente y Medio Rural y Marino. Madrid. (In Spanish)

González, L.M., A. Margalida, R. Sánchez, J. Caballero, and J. Oria. 2008. La alimentación suplementaria como herramienta efectiva para mejorar el éxito reproductivo del águila imperial ibérica. Pp. 487-506 in L.M. González and A. Margalida (eds.), Biología de la conservación del águila imperial ibérica (Aquila adalberti) [Conservation biology of the Spanish Imperial Eagle Aquila adalberti]. Organismo Autónomo Parques Nacionales. Ministerio de Medio Ambiente y Medio Rural y Marino. Madrid. (In Spanish)

González, L.M., A. Margalida, R. Sánchez, J. Oria, and L. Prada. 2008. Cría cooperativa en el águila imperial ibérica: un caso de poliandria con comportamiento sexual invertido del macho [Cooperative breeding in the Spanish Imperial Eagle: a case of polyandry reversed sexual behavior of the male]. Pp. 159-163 in L.M. Gonzálezand A. Margalida (eds.), Biología de la conservación del águila imperial ibérica (Aquila adalberti) [Conservation biology of the Spanish Imperial Eagle (Aquila adalberti)]. Organismo Autónomo Parques Nacionales. Ministerio de Medio Ambiente y Medio Rural y Marino. Madrid. (In Spanish)

González, L.M., J. Oria, A. Margalida, R. Sánchez, L. Prada, J. Caldera, A. Aranda, and J.I. Molina. 2008. Dispersión natal efectiva y edad de maduración reproductora en el águila imperial ibérica [Effective natal dispersion and age of breeding maturation of the Spanish Imperial Eagle]. Pp. 157-172 in L.M. González and A. Margalida (eds.), Biología de la conservación del águila imperial ibérica (Aquila adalberti) [Conservation biology of the Spanish Imperial Eagle (Aquila adalberti)]. Organismo Autónomo Parques Nacionales. Ministerio de Medio Ambiente y Medio Rural y Marino. Madrid. (In Spanish)

González, L.M., J. Oria, R. Sánchez, A. Margalida, A. Aranda, L. Prada, J. Caldera, J. Caballero, and J.I. Molina. 2008. Estatus y cambios de hábitat en la población del Águila imperial ibérica en el periodo 1974-2004 [Status and habitat changes in the Spanish Imperial Eagle population in the period 1974-2004]. Pp. 113-118 in L.M. González and A. Margalida (eds.), Biología de la conservación del águila imperial ibérica (Aquila adalberti) [Conservation biology of the Spanish Imperial Eagle (Aquila adalberti)]. Organismo Autónomo Parques Nacionales. Ministerio de Medio Ambiente y Medio Rural y Marino, Madrid. (In Spanish)

Margalida, A., L.M. González, R. Sánchez, J. Oria, L. Prada, J. Caldera, A. Aranda, J. Caballero, and J.I. Molina. 2008. Estudio de la biología reproductora del águila imperial ibérica [Study of the breeding biology of the Spanish Imperial Eagle]. Pp. 259-284 in L.M. González and A. Margalida (eds.), Biología de la conservación del águila imperial ibérica (Aquila adalberti) [Conservation biology of the Spanish Imperial Eagle (Aquila adalberti)]. Organismo Autónomo Parques Nacionales. Ministerio de Medio Ambiente y Medio Rural y Marino. Madrid. (In Spanish)

Margalida, A., S. Mañosa, L.M. González, E. Ortega, R. Sánchez, and J. Oria. 2008. La reproducción de pre-adultos y su efecto en la productividad del águila imperial ibérica [Breeding of pre-adults and its effects on productivity of the Spanish Imperial Eagle]. Pp. 393-409 L.M. González and A. Margalida (eds.), Biología de la conservación del águila imperial ibérica (Aquila adalberti) [Conservation biology of the Spanish Imperial Eagle (Aquila adalberti). Organismo Autónomo Parques Nacionales. Ministerio de Medio Ambiente y Medio Rural y Marino. Madrid. (In Spanish)

Margalida, A., R. Sánchez, L.M. González, J. Oria, and L. Prada. 2008. Comportamiento parental en el águila imperial ibérica: diferencias sexuales en un ave de presa moderadamente dimórfica [Parental behavior in the Spanish Imperial Eagle: sexual differences in a moderately dimorphic birds of prey]. Pp. 307-320 in L.M. González and A. Margalida (eds.), Biología de la conservación del águila imperial ibérica (Aquila adalberti) [Conservation biology of the Spanish Imperial Eagle Aquila adalberti)]. Organismo Autónomo Parques Nacionales. Ministerio de Medio Ambiente y Medio Rural y Marino. Madrid. (In Spanish)

Ortega, E., S. Mañosa, A. Margalida, R. Sánchez, J. Oria, and L.M. González. 2008. Descripción demográfica de la recuperación del águila imperial ibérica [Demographic description of the recovery of the Spanish Imperial Eagle]. Pp. 355-375 in L.M. González and A. Margalida (eds.), Biología de la conservación del águila imperial ibérica (Aquila adalberti) [Conservation biology of the Spanish Imperial Eagle (Aquila adalberti)]. Organismo Autónomo Parques Nacionales. Ministerio de Medio Ambiente y Medio Rural y Marino. Madrid. (In Spanish)

Afonso, I., and A. Margalida. 2006. Situació i distribució del duc (Bubo bubo) en l’àmbit del [Status and distribution of the Eurasian Eagle Owl (Bubo bubo in the boundary of the Parc Natural de l’Alt Pirineu. Pp. 70-71 in P. Aymerich (ed.), Anuari Naturalista del Parc Natural de l’Alt Pirineu, 2005. Parc Natural de lAlt Pirineu-Departament de Medi Ambient i Habitatge, Lleida, Spain. (In Catalan)

García, D., A. Margalida, and J. Canut. 2006. Monitorització de la població de Trencalòs (Gypaetus barbatus) en l’àmbit del [Monitoring of the Bearded Vulture (Gypaetus barbatus) population in the boundaries of Parc Natural de l’Alt Pirineu]. Pp. 64-65 in P. Aymerich (ed.), Anuari Naturalista del Parc Natural de l’Alt Pirineu, 2005. Parc Natural de l’Alt Pirineu-Departament de Medi Ambient i Habitatge, Lleida, Spain. (In Catalan)

Bertran, J., and A. Margalida. 2005. Actividad sexual en el Quebrantahuesos: cópulas frecuentes y vigilancia de la pareja como estrategias para proteger la paternidad [Sexual activity in the Bearded Vulture: frequent copulations and parental vigilance as parental protection]. Pp. 39-47 in A. Margalida and R. Heredia (eds.), Biología de la conservación del Quebrantahuesos Gypaetus barbatus en España [Conservation biology of the Bearded Vulture Gypaetus barbatus in Spain]. Organismo Autónomo de Parques Nacionales, Madrid. (In Spanish)

Bertran, J., and A. Margalida 2005. Poliandria cooperativa en el Quebrantahuesos: aspectos socio-sexuales y cuidado parental [Cooperative polyandry in the Bearded Vulture: socio-sexual aspects and parental care]. Pp. 107-116 in A. Margalida and R. Heredia (eds.), Biología de la conservación del Quebrantahuesos Gypaetus barbatus en España [Conservation biology of the Bearded Vulture Gypaetus barbatus in Spain]. Organismo Autónomo de Parques Nacionales, Madrid. (In Spanish)

Donázar, J.A., A. Margalida, J. Bustamante, F. Hernández, M. Romero, R.J.Antor, D. García, and R. Heredia. 2005. Aplicación de modelos predictivos en la selección del cortado de nidificación por el Quebrantahuesos en los Pirineos: cambios a largo plazo (1991-2002). Pp. 139-152 in A. Margalida and R. Heredia (eds.), Biología de la conservación del Quebrantahuesos Gypaetus barbatus en España [Conservation biology of the Bearded Vulture Gypaetus barbatus in Spain]. Organismo Autónomo de Parques Nacionales, Madrid. (In Spanish)

Margalida, A., and J. Bertran. 2005. El cuidado biparental en el Quebrantahuesos [Parental care in the Bearded Vulture]. Pp. 73-84 in A. Margalida and R. Heredia (eds.), Biología de la conservación del Quebrantahuesos Gypaetus barbatus en España [Conservation biology of the Bearded Vulture Gypaetus barbatus in Spain]. Organismo Autónomo de Parques Nacionales, Madrid. (In Spanish)

Heredia, R., A. Margalida, and H. Frey. 2005. Bibliografía descriptiva sobre el quebrantahuesos: síntesis de un vaciado bibliográfico desde la segunda mitad del siglo XX. Pp. 317-334 in A. Margalida and R. Heredia (eds.), Biología de la conservación del Quebrantahuesos Gypaetus barbatus en España [Biology and conservation of the Bearded Vulture Gypaetus barbatus in Spain]. Organismo Autónomo de Parques Nacionales, Madrid. (In Spanish)

Heredia, R., and A. Margalida. 2005. Criterios de identificación del quebrantahuesos (Gypaetus barbatus barbatus) en función de la edad y las características del plumaje. Pp. 335-339 in A. Margalida and R. Heredia (eds.), Biología de la conservación del Quebrantahuesos Gypaetus barbatus en España [Biology and conservation of the Bearded Vulture Gypaetus barbatus in Spain]. Organismo Autónomo de Parques Nacionales, Madrid. (In Spanish)

Margalida, A. and J. Bertran. 2005. El comportamiento de defensa territorial del Quebrantahuesos ante conespecíficos y heterospecíficos: riesgo de predación, competencia sexual, trófica y territorial. Pp. 97-106 in A. Margalida and R. Heredia (eds.), Biología de la conservación del Quebrantahuesos Gypaetus barbatus en España [Conservation biology of the Bearded Vulture Gypaetus barbatus in Spain]. Organismo Autónomo de Parques Nacionales, Madrid. (In Spanish)

Margalida, A., and J. Bertran. 2005. Ecología trófica del Quebrantahuesos en los Pirineos [Trophic ecology of the Bearded Vulture in the Pyrenees]. Pp. 117-136 in A. Margalida and R. Heredia (eds.), Biología de la conservación del Quebrantahuesos Gypaetus barbatus en España [Conservation biology of the Bearded Vulture Gypaetus barbatus in Spain]. Organismo Autónomo de Parques Nacionales, Madrid. (In Spanish)

Margalida, A., J. Bertran, and R. Heredia. 2005. Asincronía de eclosión y agresión fratricida: estrategias adaptativas de la reducción de pollada en el Quebrantahuesos. Pp. 85-95 in A. Margalida and R. Heredia (eds.), Biología de la conservación del Quebrantahuesos Gypaetus barbatus en España [Conservation biology of the Bearded Vulture Gypaetus barbatus in Spain]. Organismo Autónomo de Parques Nacionales, Madrid. (In Spanish)

Margalida, A., D. García, J. Bertran, and R. Heredia. 2005. Biología de la reproducción del Quebrantahuesos en los Pirineos [Breeding biology of the Bearded Vulture in the Pyrenees]. Pp. 49-71 in A. Margalida and R. Heredia (eds.), Biología de la conservación del Quebrantahuesos Gypaetus barbatus en España [Conservation biology of the Bearded Vulture Gypaetus barbatus in Spain]. Organismo Autónomo de Parques Nacionales, Madrid. (In Spanish)

Margalida, A., R. Heredia, and J. Bertran. 2005. El uso de videocámaras para la monitorización de la reproducción del quebrantahuesos: metodología y resultados de un sistema aplicado en los Pirineos [The use of videocameras for monitoring breeding of the Bearded Vulture: methodology and results of an applied system in the Pyrenees]. Pp. 269-278 in A. Margalida and R. Heredia (eds.), Biología de la conservación del Quebrantahuesos Gypaetus barbatus en España [Conservation biology of the Bearded Vulture Gypaetus barbatus in Spain. Organismo Autónomo de Parques Nacionales, Madrid. (In Spanish)

Margalida, A., J. Bertran, and D. García. 2004. Trencalòs Gypaetus barbatus [Bearded Vulture]. Pp. 158-159 in J. Estrada, V. Pedrocchi, L. Brotons and S. Herrando (eds.), Atles dels ocells nidificants de Catalunya [Atlas of the breeding birds of Catalonia]. Lynx Edicions, Barcelona. (In Catalan)

Margalida, A., and J. Canut. 2004. Milà reial Milvus milvus [Red Kite]. Pp. 156-157 in J. Estrada, V. Pedrocchi, L. Brotons and S. Herrando (eds.), Atles dels ocells nidificants de Catalunya [Atlas of the breeding birds of Catalonia]. Lynx Edicions, Barcelona. (In Catalan)

Margalida, A., D. García, and J. Bonfil. 2004. Aufrany Neophron percnopterus [Egyptian Vulture]. Pp. 160-161 in J. Estrada, V. Pedrocchi, L. Brotons, and S. Herrando (eds), Atles dels ocells nidificants de Catalunya [Atlas of the breeding birds of Catalonia]. Lynx Edicions, Barcelona. (In Catalan)

García, D., A. Margalida, A. Borau, and A. Beneito. 2004. Voltor comú Gyps fulvus [Griffon Vulture]. Pp. 162-163 in J. Estrada, V. Pedrocchi, L. Brotons, and S. Herrando (eds.), Atles dels ocells nidificants de Catalunya [Atlas of the breeding birds of Cstalonia]. Lynx Edicions, Barcelona. (In Catalan)

Antor, R., A. Margalida, and R. Heredia. 2003. Quebrantahuesos [Bearded Vulture]. Pp. 125-129 in A. Madroño, C. González, and J.C. Atienza (eds.), Libro Rojo de las Aves de España [Red Book of the birds of Spain]. Ministerio de Medio Ambiente, SEO/BirdLife, Madrid. (In Spanish)

Antor, R., A. Margalida, and R. Heredia. 2003. Quebrantahuesos [Bearded Vulture]. Pp. 164-165 in R. Martí (ed.), Atlas de las aves reproductoras de España [Atlas of the breeding birds of Spain]. Ministerio de Medio Ambiente, SEO/BirdLife, Madrid. (In Spanish)

Margalida. A. 2003. Fauna pirenaica [Pyrenean fauna]. Pp. 8-9 in L. Alfonso and X. Buxó (eds.), Cavallers y zonas cercanas. L. Alfonso and X. Buxó Editores. Barcelona. (In Catalan)

Margalida, A. 2003. Rapaces rupícolas de las sierras prepirenaicas. Pp. 10-11 in L. Alfonso and X. Buxó (eds.), Escales y zonas cercanas. L. Alfonso & X. Buxó Editores. Barcelona. (In Catalan)

Heredia, R., and A. Margalida. 2002. Status of the Bearded Vulture Gypaetus barbatus in Spain. Pp. 33-38 in LPO Fir (ed.), Actes du Colloque International "Conservation et gestion des populations de Gypaète barbu". LPO, Paris. (In French)

Margalida, A. 2002. Rapaces rupícolas y escaladores: ¿Es posible su cohabitación? Pp. 7-8 in L. Alfonso & X. Buxó (eds.), Vilanova de Meià y zonas cercanas. L. Alfonso & X. Buxó Editores. Barcelona. (In Spanish)

Margalida, A., R. Heredia, and J. Boudet. 2002. Caméras vidéo pour l’étude de la biologie de la reproduction du Gypaète barbu (Gypaetus barbatus): un premier bilan. Pp. 115-121 in LPO Fir (ed.), Actes du Colloque International "Conservation et gestion des populations de Gypaète barbu". LPO, Paris. (In French)

Robert, I., A. Margalida, and J.F. Seguin. 2002. Contribution à l’étude du régime alimentaire du gypaète barbu (Gypaetus barbatus): analyse comparée des restes alimentaires prélevés dans les nids et les aires de cassage en Corse et en Espagne. Pp. 75-82 in LPO Fir (ed.), Actes du Colloque International "Conservation et gestion des populations de Gypaète barbu". LPO, Paris. (In French)

Heredia, R., and A. Margalida. 2001. Status, breeding parameters and conservation measures in the Spanish Bearded Vulture (Gypaetus barbatus) population. Pp. 51-57 in A. Sakoulis, M. Probonas, M., and S. Xirouchakis (eds.), Proceedings of the 4th Workshop of Bearded Vulture, Irakleio, Crete.

Margalida, A., J. Bertran, R. Heredia, J. Boudet, and R. Pelayo. 2001. Preliminary results of the diet of Bearded Vultures (Gypaetus barbatus) during the nestling period and applications in conservation and management measures. Pp. 59-62 in A. Sakoulis, M. Probonas, and S. Xirouchakis (eds.), Proceedings of the 4th Workshop of Bearded Vulture, Irakleio, Crete.

Margalida, A., D. García, and J. Bertran. 2001. Biologia de la reproducció del Trencalòs (Gypaetus barbatus) al Parc Nacional d’Aigüestortes i Estany de Sant Maurici. Pp. 255-274 in V Jornades de Recerca al Parc Nacional d'Aigüestortes i Estany de Sant Maurici. (In Catalan)

Margalida, A. 1999. El Trencalòs [Bearded Vulture]. Pp. 28-29 in D. Gómez (ed.), Pájaro de Barro. Prames Ediciones. (In Catalan)

Negro, J.J., A. Margalida, F. Hiraldo, and R. Heredia. 1999. A new behavioural hypothesis to explain the cosmetic colouration of Bearded Vultures. Pp. 81-83 in H. Frey, G. Schaden, and M. Bijleveld (eds.), Bearded Vulture Annual Report 1999. Foundation for the Conservation of the Bearded Vulture, Melk, Austria.

García, D., and A. Margalida. 1998. Avaluació de la disponibilitat tròfica del Trencalòs (Gypaetus barbatus) durant el període reproductor al Parc Nacional d'Aigüestortes i Estany de Sant Maurici: importància de les poblacions d'Isards (Rupicapra pyrenaica). Pp. 179-199 in IV Jornades de Recerca al Parc Nacional d'Aigüestortes i Estany de Sant Maurici. (In Catalan)

Margalida, A., and R. Pelayo. 1998. Observation of a Pyrenean Bearded Vulture (Gypaetus barbatus) bathing in a ferruginous spring. Pp. 89-90 in H. Frey, G. Schaden, and M. Bijleveld (eds.), Bearded Vulture Annual Report 1998. Foundation for the Conservation of the Bearded Vulture, Melk, Austria.



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