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Documents disponibles écrits par cet auteur (16)
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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
Natascha Gaedecke, Auteur ; Wolfgang Winkel, AuteurFrom 1994 until 2003 we recorded the settlement of hole-nesting passerines in nestbox-rondells (8 nestboxes around an oak-tree, study area near Brunswick, Lower Saxony/Germany). Nearly all of the nestbox-rondells were used by at least one breedi[...]
Article
Wolfgang Winkel, Auteur ; Doris Winkel, AuteurDrost (1936) categorized the breeding plumage of male Pied Flycatchers (Ficedula hypoleuca) into seven colour types with a variation which ranges continuously from dorsal completely black (type I) to fully brown or greyish brown (type VII). This[...]
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
Wolfgang Winkel, Auteur ; Doris Winkel, AuteurStudies about nestbox roosting of birds in winter were carried out from 1988/89 to 1999/2000 in a research area with 370 nestboxes in Lower Saxony. Besides Nuthatches, Great Tits, Blue Tits, and Tree Sparrows a female Lesser Spotted Woodpecker w[...]
Article
Wolfgang Winkel, Auteur ; Doris Winkel, AuteurIn numerous study areas near Braunschweig/Lower Saxony data of Nuthatches, breeding in artificial nestboxes, were recorded since the early 1950s. In 2004 the first evidences of second broods for this region could be established. In botl cases of[...]
Article
Wolfgang Winkel, Auteur ; Doris Winkel, AuteurIn a nestbox study plot near Lingen (52.27 N, 7.15 E M in western Lower Saxony/Gerany a consistent increasing of Pied Flycatcher breeding pair density was established from 1974 to 1997. This is discussed in relation to the "border situation" of [...]
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
Ute Rahne, Auteur ; Wolfgang Winkel, AuteurFrom 1945 until 1997 more than 212,000 Pied Flycatchers Ficedula hypoleuca (breeding birds and nestlings) were ringed in study areas near Brunswick in northern Germany. Up to a very recent period no recoveries from this population are existing o[...]
Article
Christiaan Both, Auteur ; Juan José Sanz, Auteur ; Aleksandr V. Artemyev, Auteur ; Bert Blaauw, Auteur ; Richard J. Cowie, Auteur ; Aarnoud J. Dekhuizen, Auteur ; Anders Enemar, Auteur ; Antero Järvinen, Auteur ; N. Erik I. Nyholm, Auteur ; Jaime Potti, Auteur ; PIERRE-ALAIN RAVUSSIN, Auteur ; Bengt Silverin, Auteur ; Fred M. Slater, Auteur ; Leonid V. Sokolov, Auteur ; Marcel E. Visser, Auteur ; Wolfgang Winkel, Auteur ; Jonathan Wright, Auteur ; Herwig Zang, AuteurDans Ardea (94(3) 2006)In most bird species there is only a short time window available for optimal breeding due to variation in ecological conditions in a seasonal environment. Long-distance migrants must travel before they start breeding, and conditions at the winte[...]
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Walter Wimmer, Auteur ; Wolfgang Winkel, AuteurThe snail component in the diet of Pied Flycatcher (Ficedula hypoleuca) nestlings was examined during the year 2000 in eight study areas in Lower Saxony/Germany by using the neck-ring method and analysing food remains and pellets from the nests.[...]
Article
Wolfgang Winkel, Auteur ; Doris Winkel, AuteurThe mean hatching success of 1838 Pied Flycatcher clutches recorded from 1974 to 1999 amounts to 94.7% (without clutches destroyed by predators). Totally hatching failure was only found in six broods ( = 0.3% of all broods recorded). A sterile m[...]
Article
Wolfgang Winkel, Auteur ; Doris Winkel, AuteurWe found a Coal Tit pair breeding successfully in the hole of an iron tube of a path-barrier although the tube with the nest inside was constantly raised up from horizontal to vertical position when the barrier was opened.
Article
Judith Morales, Auteur ; Suvi Ruuskanen, Auteur ; Toni Laaksonen, Auteur ; Tapio Eeva, Auteur ; Rafael Mateo, Auteur ; Eugen Belskii, Auteur ; Elena V. Ivankina, Auteur ; Antero Järvinen, Auteur ; Anvar Kerimov, Auteur ; Erkki Korpimäki, Auteur ; Indriķis Krams, Auteur ; Raivo Maend, Auteur ; Chiara Morosinotto, Auteur ; Markku Orell, Auteur ; Anna Qvarnstrom, Auteur ; Heli Siitari, Auteur ; Fred M. Slater, Auteur ; Vallo Tilgar, Auteur ; Marcel E. Visser, Auteur ; Wolfgang Winkel, Auteur ; Herwig Zang, Auteur ; Juan Moreno, AuteurThe expression and impact of maternal effects may vary greatly between populations and environments. However, little is known about large-scale geographical patterns of variation in maternal deposition to eggs. In birds, as in other oviparous an[...]
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 [...]
