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Biography

I'm a British wildlife biologist based in Sweden. My research has focused on Tengmalm's owls (breeding ecology) and golden eagles (wind farm management). I currently work as an environmental consultant.

EnviroPlanning AB

Lilla Bommen 5C

Göteborg, SE-411 04 Sweden

Email: tim.hipkiss@enviroplanning.se

Research Interests

All aspects of owl ecology.
Effects of cyclic voles on raptor ecology.
Wind farm effects on raptors.


Species of Interest:
Tengmalm's (Boreal) Owl Golden Eagle

Publications

Hörnfeldt, B., T. Hipkiss, A.-K. Fridolfsson, U. Eklund, and H. Ellegren. 2000. Sex ratio and fledging success of supplementary-fed Tengmalm's Owl broods. Molecular Ecology 9: 187–192. pdf
Hipkiss, T., B. Hörnfeldt, U. Eklund, and S. Berlin. 2002. Year-dependent sex-biased mortality in supplementary-fed Tengmalm's Owl nestlings. Journal of Animal Ecology 71: 693–699. pdf
Hipkiss, T., B. Hörnfeldt, Å. Lundmark, M. Norbäck, and H. Ellegren. 2002. Sex ratio and age structure of nomadic Tengmalm's Owls: a molecular approach. Journal of Avian Biology 33: 107–110. pdf
Hipkiss, T. 2002. Sexual size dimorphism in Tengmalm's Owl (Aegolius funereus) on autumn migration. Journal of Zoology 257: 281–285. pdf
Hipkiss, T. 2002. Brood sex ratio and sex differences in Tengmalm's Owl (Aegolius funereus). Ph.D. dissertation, Umeå University, Umeå, Sweden. pdf
Hipkiss, T., and B. Hörnfeldt. 2004. High interannual variation in the hatching sex ratio of Tengmalm’s Owl broods during a vole cycle. Population Ecology 46: 263–268. pdf
Hörnfeldt, B., T. Hipkiss, and U. Eklund. 2005. Fading out of vole and predator cycles? Proceedings of the Royal Society of London B: Biological Sciences 272: 2045–2049. pdf
Hipkiss, T. 2007. Can migrating Tengmalm’s Owls Aegolius funereus be reliably sexed in autumn using simple morphometric measurements? Ringing and Migration 23: 201–204. pdf
Hipkiss, T., O. Stefansson, and B. Hörnfeldt. 2008. Effect of cyclic and declining food supply on Great Grey Owls in boreal Sweden. Canadian Journal of Zoology 86: 1426–1431. pdf
Moss, E.H.R., T. Hipkiss, I. Oskarsson, A. Häger, T. Eriksson, L.-E. Nilsson, S. Halling, P.-O. Nilsson, and B. Hörnfeldt. 2012. Long-term study of reproductive performance in Golden Eagles in relation to food supply in boreal Sweden. Journal of Raptor Research 46: 248–257.
Hipkiss, T., J. Gustafsson, U. Eklund, and B. Hörnfeldt. 2013. Is the long-term decline of Boreal Owls in Sweden caused by avoidance of old boxes? Journal of Raptor Research 47: 15–20.
Sandgren, C., T. Hipkiss, H. Dettki, F. Ecke, and B. Hörnfeldt. 2014. Habitat use and ranging behaviour of juvenile Golden Eagles Aquila chrysaetos within natal home ranges in boreal Sweden. Bird Study 61: 9–16.
Moss, E.H.R., T. Hipkiss, F. Ecke, H. Dettki, P. Sandström, P.H. Bloom, J.W. Kidd, S.E. Thomas, and B. Hörnfeldt. 2014. Home-range size and examples of post-nesting movements for adult Golden Eagles (Aquila chrysaetos) in boreal Sweden. Journal of Raptor Research 48: 93–105.
Hipkiss, T., E. Moss, and B. Hörnfeldt. 2014. Variation in quality of Golden Eagle territories and a management strategy for wind farm projects in northern Sweden. Bird Study 61: 444–446.
Bloom, P.H., J.W. Kidd, S.E. Thomas, T. Hipkiss, B. Hörnfeldt & M.J. Kuehn. 2015. Trapping success of adult Golden Eagles in northern Sweden using carrion with bow nets. Journal of Raptor Research 49: 92–97.