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Article
Milica Požgayová, Auteur ; Jaroslav Kolecek, Auteur ; Marcel Honza, Auteur ; Petr Procházka, AuteurObligate avian brood parasites usually require longer and/or more parental care than host progeny and thus may have a detrimental effect on survival of host parents. Many hosts of brood parasites are long-distance migrants, spending significant [...]
Article
Jaroslav Kolecek, Auteur ; Michal Šulc, Auteur ; Radka Piálková, Auteur ; Jolyon Troscianko, Auteur ; Milica Požgayová, Auteur ; Marcel Honza, Auteur ; Petr Procházka, AuteurThe Common Cuckoo (hereafter Cuckoo) shows two adult plumage morphs—adult male plumage is grey and adult females are either grey or, less frequently, rufous. The situation is less clear in juveniles, as both sexes exhibit variable proportions of[...]
Article
Kateřina Sosnovcová, Auteur ; Jaroslav Kolecek, Auteur ; Milica Požgayová, Auteur ; Václav Jelínek, Auteur ; Michal Šulc, Auteur ; Petra Steidlová, Auteur ; Marcel Honza, Auteur ; Petr Procházka, AuteurIn many bird species, return rates tend to be greatest in the vicinity of their hatching site, thus natal philopatry is an important trait in avian demography. In the present study, we examined how conditions in natal nests affect return rates a[...]
Article
Miroslav Capek, Auteur ; Tereza Petrusková, Auteur ; Zuzana Šebelíková, Auteur ; Jesús Campos Serrano, Auteur ; Petr Procházka, Auteur ; Marcel Honza, Auteur ; Milica Požgayová, AuteurIn some systems, brood parasites may be attracted by vocal or visual signals connected with host breeding. We studied a Great Reed Warbler (Acrocephalus arundinaceus) population where annually 30–50% of nests are parasitized by the Common Cuckoo[...]
Article
Alfréd Trnka, Auteur ; Milica Požgayová, AuteurCapsule: Using dummy experiments at nests of Great Reed Warblers Acrocephalus arundinaceus, we found no evidence to support the hypothesis that the contrasting black and white plumage colouration in Magpies Pica pica has evolved to reduce mobbin[...]
Article
Milica Požgayová, Auteur ; Petr Procházka, Auteur ; Marcel Honza, AuteurNest predation and brood parasitism are costly for nest owners, and natural selection should therefore favour the evolution of parental counterdefences. We addressed the question of whether Blackcaps Sylvia atricapilla change their incubation be[...]
Article
Alfréd Trnka, Auteur ; Milica Požgayová, Auteur ; Petr Procházka, Auteur ; Miroslav Capek, Auteur ; Marcel Honza, AuteurThe use of active chemical defence against predators is relatively rare in birds. Among others, it has been reported for some members of family Cuculidae whose chicks, when threatened, expel dark foul-smelling liquid from their cloaca. Apart fro[...]
Article
Václav Jelínek, Auteur ; Petr Procházka, Auteur ; Milica Požgayová, Auteur ; Marcel Honza, AuteurIn recent decades, numerous studies have examined factors affecting risk of host nest parasitism in well-known avian host-parasite systems; however, little attention has been paid to the role of host nest availability. In accordance with other s[...]
Article
Václav Jelínek, Auteur ; Milica Požgayová, Auteur ; Marcel Honza, Auteur ; Petr Procházka, AuteurExtended phenotypes with signalling function are mostly restricted to animal taxa that use construction behaviour during courtship displays. However, they can be used also as post-mating signals of mate quality, allowing individuals to obtain re[...]
Article
Marcel Honza, Auteur ; Petr Procházka, Auteur ; Milica Požgayová, AuteurWhile avian eggshell colouration has attracted biologists for decades, little is known about its variation within individuals. The main goal of this study was to explore within- and between-season repeatability of eggshell appearance in the grea[...]
