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Article
Anastasia Caluja, Auteur ; Sebastian G. Vetter-Lang, Auteur ; Lisamarie Lehner, Auteur ; Katharina Mahr, AuteurBill colouration is a highly variable trait with the potential to rapidly change over time. We observed strong interindividual and seasonal variation in the bill colour of captive female House Sparrows (Passer domesticus) and describe two colour[...]
Article
Female and male Blue Tits (Cyanistes caeruleus) sing in response to experimental predator exposition
Katharina Mahr, Auteur ; Carlo L. Seifert, Auteur ; Herbert Hoi, AuteurFemale song is recognized to serve a similar function as male song and underlies sexual selection processes; yet certain patterns of the expression of female singing behaviour are not in line with traditional explanations known from male songbir[...]
Article
Martin Kapun, Auteur ; Alzbeta Darolova, Auteur ; Jan Kristofik, Auteur ; Katharina Mahr, Auteur ; Herbert Hoi, AuteurIn a few bird species, dimorphism already exists in nestling and juvenile plumage coloration and these colour morphs are often attributable to different sexes. In this study we detected variation in nestling coloration among European Bee-eaters [...]
