Journal of Ornithology
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Parental genetic characteristics and hatching success in a recovering population of Lesser Kestrels
Journal of Ornithology - Tập 151 - Trang 155-162 - 2009
Decreased hatchability is a common consequence of inbreeding in oviparous organisms and it has been generally considered a useful measure of the effects of reduced genetic diversity on embryological development. Here, we examined the pattern of hatching failure in a wild population of the endangered Lesser Kestrel (Falco naumanni). Particularly, we first analyzed long-term changes of hatching fail......
Ultraviolet-blue plumage colouration can be perceived as an indicator of fluctuating asymmetry by Blue Tits (Cyanistes caeruleus)
Journal of Ornithology - - 2011
Great Reed Warbler singing behavior and conspicuous song structures are not nest-location cues for the Common Cuckoo
Journal of Ornithology - Tập 158 - Trang 925-933 - 2017
In 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 (Cuculus canorus). We observed host males and quantified their song-related behaviors, including time spent singing, distance of movements and time spent ......
Scanning behaviour of foraging Ruffs Philomachus pugnax during spring migration: is flock size all that matters?
Journal of Ornithology - - 2011
Orientation of shorebirds in relation to wind: both drift and compensation in the same region
Journal of Ornithology - Tập 154 - Trang 385-392 - 2012
Migratory movements in air or water are strongly affected by wind and ocean currents and an animal which does not compensate for lateral flow will be drifted from its intended direction of movement. We investigated whether arctic shorebirds during autumn migration in the region of South Sweden and the southern Baltic Sea compensate for wind drift or allow themselves to be drifted when approaching ......
Phylogeny, migration and life history: filling the gaps in the origin and biogeography of the Turdus thrushes
Journal of Ornithology - Tập 160 - Trang 529-543 - 2019
Although the biogeographic history of thrushes (Turdidae) has been extensively studied, a concise discussion of this topic is still lacking. Therefore, in this study we aimed to investigate: (1) the evolutionary origin of the migratory behaviour of the Turdus thrushes in a biogeographic context including (2) trans-Atlantic dispersal events, (3) possible colonization routes into the Nearctic, and (......
Mass occurrence and habitat selection of Common Redpolls (Carduelis flammea) after a large seed crop year: snow-covered ground facilitates food access
Journal of Ornithology - Tập 162 - Trang 1087-1099 - 2021
In boreal forests, food supplies typically have cyclic variations, and many species here fluctuate in numbers from year to year. One group of species showing large variations in population size is birds specialized on seeds from masting trees. Here, I analyze spatial patterns of a mass occurrence and habitat selection of the Common Redpoll (Carduelis flammea) during the breeding season in southeas......
The frequency distribution of lead concentration in feathers, blood, bone, kidney and liver of golden eagles Aquila chrysaetos: insights into the modes of uptake
Journal of Ornithology - Tập 156 Số 4 - Trang 1095-1103 - 2015
Predatory risk favours intermittent incubation of a colonial burrowing shorebird, the Crab Plover Dromas ardeola
Journal of Ornithology - Tập 158 Số 4 - Trang 1081-1090 - 2017
Intermittent incubation in birds is currently interpreted as the result of trade-offs between the needs of the embryo and those of the parents. However, the low nest attendance in some species is still puzzling. We studied the Crab Plover (Dromas ardeola), a tropical burrow nesting shorebird with very low incubation constancy (less than 55%) due to frequent recesses from incubation (on average 5&n......
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