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Female‐biased dispersal, low female recruitment, unpaired males, and the extinction of small and isolated bird populations
Predicting how female-biased natal dispersal may differentially affect the extinction risk of populations and species with contrasting distributions, migratory behaviours, life histories and mating systems finds vulnerability to extinction should be greater for migratory than for resident species and greater for short-lived than for long-lived species. Expand
Risk taking during parental care: a test of three hypotheses applied to the pied flycatcher
The model predicts that the importance of the reproductive value of the offspring should decrease relative to the harm that offspring would suffer if they were not cared for when the predator type changes from a nest predator to a predator of adults, and when conditions for breeding turn from good to bad. Expand
Study of the white forehead patch of male pied flycatchers in a Norwegian population over seven years indicates that females do not use patch size as a mate choice cue, and possible reasons for population divergences are discussed, such as female choice on an alternative secondary sexual character (general plumage color) and speciation among FicedulaFlycatchers. Expand
Edge Effects on the Understory Bird Community in a Logged Forest in Uganda
Understanding how the fauna of logged tropical rainforests responds to fragmentation and the cre- ation of edges is vital to ensure conservation of biodiversity. We studied the composition of theExpand
Predation favours cryptic coloration in breeding male pied flycatchers
The data suggest a cost associated with conspicuous coloration in male pied flycatchers, and support the view that predation may help explain sexual dimorphism in bird coloration, delayed plumage maturation, and why males inspecies with less male parental care are more colourful than males in species with moremale parental care. Expand
Mate choice on multiple cues, decision rules and sampling strategies in female pied flycatchers
The mate sampling behaviour and mate choice of 125 individually marked female pied flycatchers, Ficedula hypoleuca, was recorded with video cameras and shows that females compare and choose mates on the basis of at least three different cues, and that most females are able to pick out the best or one of the best males among those sampled. Expand
Female pied flycatchers prefer brightly coloured males
Male plumage colour per se represents a cue for mate choice by female pied flycatchers, and is shown to represent a preference for the more brightly coloured male. Expand
Female-female aggression explains polyterritoriality in male pied flycatchers
Abstract Many male pied flycatchers, Ficedula hypoleuca , try to attract a second mate in a distant territory around the time their initial mate lays her clutch. In this study their success atExpand
How do birds search for breeding areas at the landscape level? Interpatch movements of male ortolan buntings
Animal movements at large spatial scales are of great importance in population ecology, yet little is known due to practical problems following individuals across landscapes. We studied the wholeExpand
Longer breeding dispersal than natal dispersal in the ortolan bunting
It is suggested that short natal dispersal and subsequent long breeding dispersal within the breeding season may be an optimal dispersal strategy in ortolan buntings owing to their patchy distribution in the study area, and it is predicted that this may also be the case for other species with patchy or fragmented distribution. Expand