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Documents disponibles écrits par cet auteur (8)
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Article
Tim Schmoll, Auteur ; Wolfgang Winkel, Auteur ; Thomas Lubjuhn, AuteurMolecular genetic analysis of parentage revealed a low frequency of mixed maternity in broods of the Coal Tit, a socially monogamous passerine with a high frequency of extra-pair paternity. Mixed maternity was detected in four (= 0.8 %) out of 4[...]
Article
Do parental quality or extra-pair paternity affect offspring sex ratio in the coal tit (Parus ater)?
Verena Dietrich, Auteur ; Tim Schmoll, Auteur ; Wolfgang Winkel, Auteur ; Thomas Lubjuhn, Auteur
Article
Tim Schmoll, Auteur ; Verena Dietrich, Auteur ; Wolfgang Winkel, Auteur ; Joerg T. Epplen, Auteur ; Thomas Lubjuhn, Auteur
Article
Andreas Plischke, Auteur ; Petra Quillfeldt, Auteur ; Thomas Lubjuhn, Auteur ; Santiago Merino, Auteur ; Juan F. Masello, AuteurWild birds exposed to stressors may modulate their investment in immunity. We studied the leucocytes of breeding burrowing parrots (Cyanoliseus patagonus) in Patagonia during five breeding seasons, during which global climate events such as a st[...]
Article
Wolfgang Winkel, Auteur ; Doris Winkel, Auteur ; Thomas Lubjuhn, AuteurIn the present paper we report about a pair of blue tits (Parus caeruleus) with a clutch of 19 eggs from which 17 young fledged. The nestlings were reared during the breeding season 2002 in a small-sized nestbox of a study area near Brunswick (5[...]
Article
Christina Buesser, Auteur ; Petra Quillfeldt, Auteur ; Thomas Lubjuhn, Auteur
Article
Juan F. Masello, Auteur ; Thomas Lubjuhn, Auteur ; Petra Quillfeldt, AuteurThe bright colours of parrots are caused by psittacofulvin pigments, which appear unique to this Order, and by structural colours. We measured red (psittacofulvin), green (mixed) and blue (structural) colours of wild burrowing parrots Cyanoliseu[...]
Article
Verena Dietrich-Bischoff, Auteur ; Tim Schmoll, Auteur ; Wolfgang Winkel, Auteur ; Thomas Lubjuhn, AuteurThe magnitude of sexual size dimorphism can be affected by sex differences in environmental sensitivity early in ontogeny that result in differential growth rates of male and female nestlings. Here, the larger sex might either be more sensitive [...]
