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Article
Bernd Leisler, AuteurThat nest structure and characteristics are primarily the result of natural selection was, until recent years, thought to be selfevident. In addition, it has been shown for a whole series of bird species that number, size, or quality of nests bu[...]
Article
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[...]
Article
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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Antal Festetics ; Bernd Leisler 1968Wildfowl, 19(19)As a first step towards a management plan for the Seewinkel area east of Lake Neusiedl, with a special consideration of the World Wildlife Fund Reserve situated in its center, the most important landscapes of the whole Lake Neusiedl region are d[...]
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Bernd Leisler, Auteur ; Hans Winkler, AuteurIn this paper, we take a closer look into the evolution of Acrocephalus warblers on islands in the Atlantic, Indian and Pacific Oceans. The shape-related morphological evolution of island species is characterized by changes in the hind limb, fli[...]
Article
Lucyna Halupka, Auteur ; Hanna Sztwiertnia, Auteur ; Marta Borowiec, Auteur ; Ewelina Klimczuk, Auteur ; Bernd Leisler, AuteurSo far discussions on the occurrence of polygyny have been conducted on an inter-specific or individual level. In this paper we analyse differences in polygyny rate between different populations of Eurasian Reed Warblers. We provide evidence tha[...]
Article
Volker Salewski, Auteur ; Herbert Stark, Auteur ; Bernd Leisler, AuteurBoth Western Olivaceous Warbler Hippolais opaca and Eastern Olivaceous Warbler H. pallida, of the form reiseri, occur in Morocco. The distribution of Western Olivaceous Warbler in the northern parts of the country is well known. Eastern Olivaceo[...]
Article
Volker Salewski, Auteur ; Franz Bairlein, Auteur ; Bernd Leisler, Auteurone of the main questions of former studies on the wintering ecology of long distance migrants is how migrants partition resources with residents in their winter quarters and to what extent competition between the two groups plays a role for the[...]
Article
Volker Salewski, Auteur ; Franz Bairlein, Auteur ; Bernd Leisler, Auteur
Article
Volker Salewski, Auteur ; Franz Bairlein, Auteur ; Bernd Leisler, AuteurWe studied the remigial molt of six Spotted Flycatchers in their winter quarters in Ivory Coast, West Africa. Molt was evident between November and March, with very variable starting dates. Most remiges molted in the dry season when the potentia[...]
Article
Volker Salewski, Auteur ; Franz Bairlein, Auteur ; Bernd Leisler, AuteurBetween spring 1994 and spring 1997 329 birds of 15 Palearctic passerine species and the Wryneck (Jynx torquilla) were ringed in the Comoe National Park, Ivory Coast. The species which were caught most frequently were Willow Warbler (Phylloscopu[...]
Article
Fränzi Korner-Nievergelt, Auteur ; Bernd Leisler, AuteurThere exist two hypotheses of the evolutionary selection pressure which produced high toe pads in passerines: First, insulation of the foot soles in cold winter quarters, and second improved locomotion abilities in coniferous needles. In this st[...]
