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Jonny Schoenjahn

Jonny Schoenjahn


After receiving, in 1981, a "Diplom" (equivalent to MSc) in Mathematics from the Technical University Karlsruhe, Germany, I undertook studies in structural engineering at the ETH Zόrich, Switzerland, and subsequently worked there at the Institute for Bridge Design. Later I had my own business in structural engineering until 1997 when I migrated to Australia with my family. There I was able to concentrate entirely on birds and ornithology, interests that I had so far pursued worldwide as a hobby. While conducting birding tours (until 2010) throughout Australia I became familiar with the remote interior of the continent. Soon I developed a strong interest in the rare and poorly known Grey Falcon, a species that had not previously been subject of a mayor study. In 2018 I received a PhD from the University of Queensland, Australia, for my work on this species, and it seems that, long ago, this study has become a lifetime project.

Perth,  Western  Australia
Phone: +61 8 9385 9939
Email: jonny.schoenjahn@uqconnect.edu.au

   Research Interests

Aspects of natural and sexual selection and, therewith, competition (in animals).

All aspects of the ecology and biology of the Australian endemic Grey Falcon.
I will be very grateful for observational reports of Grey Falcons, Australia-wide.
URL: Grey Falcon research

Species of Interest: 
  • Grey Falcon


Schoenjahn, J., Pavey, C.R. and Walter, G.H. 2020. Why female birds of prey are larger than males. Biological Journal of the Linnean Society 129: 532–542.
DOI: https://doi.org/10.1093/biolinnean/blz201

Mullin, D.W., McCulloch, G.A., Schoenjahn, J. and Walter, G.H. 2020. Phylogeography of the rare Australian endemic Grey Falcon Falco hypoleucos: implications for conservation. Bird Conservation International. DOI: https://doi.org/10.1017/S0959270920000106

Mullin, D.W., McCulloch, G.A., Schoenjahn, J. and Walter, G.H. 2020. Coping with heat in the arid interior - what can feather structure reveal about the ecology of Australia's desert-living Grey Falcon Falco hypoleucos? Emu 120: 83–89.
DOI: https://doi.org/10.1080/01584197.2019.1698301

Schoenjahn, J., C.R. Pavey, and G.H. Walter 2020. Ecology of the Grey Falcon Falco hypoleucos – current and required knowledge. Emu 120: 74–82.
DOI: https://doi.org/10.1080/01584197.2019.1654393

Schoenjahn, J. 2019. Book Review: Australian Birds of Prey in Flight–A Photographic Guide, by Seaton et al. 2019, CSIRO Publishing, Melbourne. Australian Field Ornithology 36: 60–61.

Schoenjahn, J. 2013. A hot environment and one type of prey: investigating why the Grey Falcon (Falco hypoleucos) is Australia's rarest falcon. Emu 113: 19–25.
DOI: http://dx.doi.org/10.1071/MU12049

Schoenjahn, J. 2012. The Cicadabird Coracina tenuirostris in Western Australia: a recent record from the Kimberley region. Australian Field Ornithology 29: 45–49.

Schoenjahn, J. 2011. Morphometric data of recent specimens and live individuals of the Grey Falcon Falco hypoleucos. Corella 35: 16–22.

Schoenjahn, J. 2011. How scarce is the Grey Falcon?
Boobook 29: 24–25.

Schoenjahn, J. 2010. Field identification of the Grey Falcon Falco hypoleucos. Australian Field Ornithology 27: 49–58.

Schoenjahn, J. 2010. The type and other early specimens of Grey Falcon Falco hypoleucos. Bulletin of the British Ornithologists' Club 130: 102–115.

Schoenjahn, J., R. Kavanagh, M. Stanton and U. Weber. 2008. Barking Owls holding partly eaten prey at diurnal roosts. Australian Field Ornithology 25: 36–39.

Schoenjahn, J. 2003. First record of a Painted Honeyeater Grantiella picta for Western Australia. Australian Field Ornithology 20: 107–109.

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