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American Museum of Natural History New York (USA) 109p* Bulletin American Museum of Natural History 160(1)
Article
P. Pechacek, Auteur ; K. G. Michalek, Auteur ; H. Winkler, Auteur ; D. Blomqvist, AuteurWe report two cases of simultaneous, social polyandry in the three-toed woodpecker Picoides tridactylus found in Berchtesgaden National Park, Germany during an 11-year study. The first case was between two neighbouring pairs in 2003. A female in[...]
Article
H. Winkler, Auteur ; B. Leisler, Auteur ; G. Bernroider, AuteurBirds have brains that are comparable in size to those of mammals. However, variation in relative avian brain size is greater in birds. Thus, birds are ideal subjects for comparative studies on the ecological and behavioral influences on the evo[...]
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H. Winkler, Auteur ; B. Leisler, Auteur
Article
P. Batáry, Auteur ; H. Winkler, Auteur ; A. Báldi, AuteurWe performed nest predation experiments with artificial nests in reedbeds investigating whether nest predation pressure is different at the water-reed edge and the grassland-reed edge compared with the reed interior. Furthermore, we tested the e[...]
Article
P. Pechacek, Auteur ; K. G. Michalek, Auteur ; H. Winkler, Auteur ; D. Blomqvist, Auteur
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B. Leisler, Auteur ; H. Winkler, AuteurThe morphology of eight African papyrus-dwelling passerine species (Laniarius mufumbiri, Cisticola carruthersi, Bradypterus carpalis, Acrocephalus rufescens, Chloropeta gracilirostris, Ploceus (Sitagra) pelzelni, Ploceus (Textor) castanops, and [...]
Article
H. Winkler, Auteur ; N. Kotaka, Auteur ; A. Gamauf, Auteur ; F. Nittinger, Auteur ; E. Haring, AuteurThe Okinawa woodpecker Sapheopipo noguchii is the rarest extant woodpecker species. The monotypic genus Sapheopipo was considered to be a representative of an old lineage of woodpeckers that led to the Eurasian genera Picus and the Blythipicus-G[...]
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L. G. Halsey, Auteur ; S. E. Wallace, Auteur ; A. J. Woakes, Auteur ; H. Winkler, Auteur ; P. J. Butler, AuteurWork against buoyancy during submergence is a large component of the energy costs for shallow diving ducks. For penguins, buoyancy is less of a problem, however they still seem to trade-off levels of oxygen stores against the costs and benefits [...]
