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Documents disponibles écrits par cet auteur (6)
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Article
Ferenc Mónus, Auteur ; András Liker, Auteur ; Zsolt Pénzes, Auteur ; Zoltán Barta, AuteurMale ornaments, such as plumage coloration, frequently serve as signals. The signalling function of similar ornaments in females has, however, received much less attention despite the fact that conspicuousness of their ornaments is often compara[...]
Article
Zsolt Vegvari, Auteur ; Zoltán Barta, AuteurAlong several migratory corridors in Europe, the Common Crane Grus grus exhibits a variety of migratory and roost site selection strategies. In this study we determined which environmental factors explained roost-site usage of Common Cranes in 6[...]
Article
Csongor I. Vágási, Auteur ; Péter L. Pap, Auteur ; Jacint Toekoelyi, Auteur ; Edina Szekely, Auteur ; Zoltán Barta, AuteurThe most important function of moult in birds is the renewal of deteriorated feathers. Worn and holey remiges may incur fitness costs, yet little is known about the factors responsible for the degree of feather wear and sources of variation in f[...]
Article
Péter L. Pap, Auteur ; Zoltán Barta, Auteur ; Jacint Tokolyi, Auteur ; Csongor I. Vágási, AuteurHere we investigate the change in feather quality during partial post-juvenile and complete post-breeding moult in great tit Parus major by measuring the change in the number of fault bars and feather holes on wing and tail feathers. Feathers gr[...]
Article
Péter L. Pap, Auteur ; Csongor I. Vágási, Auteur ; Gergely Osvath, Auteur ; Cosmin Muresan, Auteur ; Zoltán Barta, AuteurThe seasonal change, i.e. the marked differences between seasons of low and high productivity, in the abundance of ectosymbionts and the defence intensity of the host against pathogens is a well defined characteristic of temperate zone organisms[...]
Article
Péter L. Pap, Auteur ; Csongor I. Vágási, Auteur ; Jacint Tokolyi, Auteur ; Gábor Á. Czirják, Auteur ; Zoltán Barta, AuteurWe investigated seasonal variation in haematological indices and immune function in the non-migratory Great Tit Parus major over a complete annual cycle. The haematocrit value showed a marked reduction in spring and summer, reaching a lowest val[...]
