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Article
Great Dusky Swifts, Cypseloides (Aerornis) senex, nest and roost behind waterfalls in subtropical and tropical South America. This exceptional behaviour may not be simply the result of a step by step approach to the falls from the sides but it c[...]
Article
Along the lower reaches of the river Inn in Southeastern Bavaria, about
Article
In the decade from 1961 to 1969, the years of increase of the newly established population of the River Warbler in the riverine woodlands along the lower reaches of the Inn river, Southeastern Bavaria, a second maximum of song activity occurred [...]
Article
It is widely accepted that mouth colouration of the hatched Cuckoo nestling acts as a "supernormal releaser" not only onto the foster parents but sometimes even to other songbirds passing by, despite the fact that gaping not simply presents an e[...]
Article
The Song Thrush normally provides its nest cup with a smooth lining of wood pulp and mud or dung, but the function of this time and energy consuming activity is obviously not known. Contrary to some earlier results concerning the insulating prop[...]
