Ornis Scandinavica (Scandinavian Journal of Ornithology), Vol. 17, No. 4 (Dec., 1986), pp. 326-332 (7 pages) Suggestions and predictions of hypotheses (especially those of the "starvation hypothesis") ...
Male and female blue tits are hard to distinguish for the human observer. However, in the UV-range, visible to birds, the male is much more colourful. A closer look at the monogamous mating system of ...
Using museum specimens from Mexico, Canada, and the western United States, we examined sexual dimorphism in the Wilson's Warbler (Wilsonia pusilla), a Nearctic-Neotropic migrant (Passeriformes: ...
I was looking into the heavy brush, trying to locate an orchard oriole I knew had flown into the cover. Suddenly a blur of magnificently bright red burst onto the scene and settled on a branch in the ...
How to protect your chicks from predators? Build a dome over them! There is tremendous diversity among the nests of birds, in nest location, structure, materials, and more, but we know very little ...
A striking and extremely rare half female, half male bird has been spotted by a University of Otago zoologist. Sesquicentennial Distinguished Professor Hamish Spencer was holidaying in Colombia when ...
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