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Article
Michael Wink, Auteur ; Ivan J. Starikov, Auteur ; Karl Schulze-Hagen, Auteur ; Juan Jose Negro, Auteur ; Antoni Margalida, AuteurVultures are obligate scavengers that have long been regarded as a systematic entity. However, phylogenetic studies show that the scavenging lifestyle evolved in three distinct phylogenetic lineages of raptors [New World Vultures (Cathartidae), [...]Nouveauté
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Karl Schulze-Hagen, Auteur ; Wolfgang Fiedler, Auteur ; Franz Bairlein, Auteur
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Tim Birkhead, Auteur ; Karl Schulze-Hagen, AuteurThe Nobel Prize in Physiology or Medicine was awarded to Konrad Lorenz, Niko Tinbergen and Karl von Frisch in 1973 for their pioneering work during the 1930s and 1940s, in the study of animal behaviour. Lorenz established the foundations of etho[...]
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Tim R. Birkhead, Auteur ; Jürgen Fiebig, Auteur ; Robert Montgomerie, Auteur ; Karl Schulze-Hagen, AuteurDans Ibis (164(2) 2022)Since the late 1600s it has been assumed that the Great Auk Pinguinus impennis was similar to the Common Guillemot Uria aalge and Brünnich's Guillemot Uria lomvia in having a single, central brood patch. Through the examination of eight mounted [...]
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Karl Schulze-Hagen, Auteur ; Timothy R. Birkhead, AuteurOskar Heinroth was a pioneering German ornithologist of the early-mid 20th century whose three major contributions to ornithology have been largely overlooked. First, he conducted a systematic comparative study of the avian social signals and ot[...]
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Bernd Leisler, Auteur ; Karl Schulze-Hagen, AuteurThe pale-coloured eyes of certain vertebrate species can give the impression of a ‘penetrating gaze’ and a threatening or dangerous appearance. However, there have been few tests of this hypothesis, but three recent studies of birds – in which p[...]
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Karl Schulze-Hagen, Auteur ; Bernd Leisler, Auteur ; Hinrich Martin Schaefer, Auteur ; Veronika Schmidt, AuteurSince 1991/1992 (SCHULZE-HAGEN 1991; CRAMP and BROOKS 1992) much has been contributed to the understanding of the breeding system of the Aquatic Warbler, a species with a mating system showing elements of scramble competition, polygyny and promi[...]
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Karl Schulze-Hagen, Auteur ; Tim Birkhead, AuteurJohann Friedrich Naumann (1780-1857) was one of central Europe's most important ornithologists. His innovative approach extended beyond the museum -based taxonomical outlook typical of the time, and included perceptive observations of the ecolog[...]
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Karl Schulze-Hagen, Auteur ; Bard G. Stokke, Auteur ; Tim R. Birkhead, AuteurThe brood parasitic habits of the European Cuckoo Cuculus canorus have excited wonder, disbelief and speculation since the fourth century BC. Accurate knowledge of cuckoo biology, however, accumulated only slowly and mostly since 1700. The aim o[...]
