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Article
Shane C Sumasgutner, Auteur ; Lauren K Common, Auteur ; Simon Thomsett, Auteur ; Colleen T Downs, Auteur ; Petra Sumasgutner, AuteurAlmost universally, raptors exhibit some degree of sexual size dimorphism, with many species also having substantial sexual dimorphism in plumage patterns. The monophyletic clade ‘booted eagles’ generally do not, except for the Crowned Eagle Ste[...]
Article
Lukas Hochleitner, Auteur ; Erkki Korpimäki, Auteur ; Nayden Chakarov, Auteur ; Caroline Isaksson, Auteur ; Carina Nebel, Auteur ; Swen C. Renner, Auteur ; Ville Vasko, Auteur ; Christian C. Voigt, Auteur ; Julien Terraube, Auteur ; Petra Sumasgutner, AuteurThe loss of habitat heterogeneity due to agricultural intensification has led to a global decline in farmland birds. Among them is the Eurasian Kestrel Falco tinnunculus, which occupies high trophic levels and may be adversely affected by reduce[...]
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Jessleena Suri, Auteur ; Petra Sumasgutner, Auteur ; Éléonore Hellard, Auteur ; Ann Koeslag, Auteur ; Arjun Amar, AuteurAs the global trend towards urbanization continues, the need to understand its impact on wildlife grows. Species may have different levels of tolerance to urban disturbance; some even appear to thrive in urban areas and use human-subsidized reso[...]
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Petra Sumasgutner, Auteur ; Gareth J. Tate, Auteur ; Ann Koeslag, Auteur ; Arjun Amar, AuteurCapsule: Urban Black Sparrowhawk males hunt mostly within 2.27 km of their nest during the breeding season (‘home range’ of 16.15 km2) and increased the distance slightly to 2.43 km outside of the breeding season (18.56 km2). We found high indiv[...]
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Petra Sumasgutner, Auteur ; Thomas Zuna-Kratky, Auteur ; Harald W. Krenn, AuteurThe diversity, abundance and habitat of breeding raptors in the Austrian March floodplain forests, located in the border area between Austria, Slovakia and the Czech Republic, were studied in 2008. The study area (19.7 km(2)) had not been explor[...]
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Gareth Tate, Auteur ; Petra Sumasgutner, Auteur ; Ann Koeslag, Auteur ; Arjun Amar, AuteurHow multiple morphs are maintained within populations of colour polymorphic bird species remains a challenging question in evolutionary ecology. In some systems, differential productivity or survival between morphs are thought to play a role. He[...]
