| Titre : | Bird Study 68(1) - April, 2021 |
| Type de document : | Bulletin |
| Paru le : | 01/04/2021 |
Dépouillements
Article
Counts at 16 Capercaillie leks revealed that singing started two hours before sunrise and reached a peak in the number that sang about one hour before sunrise. Most song had finished by sunrise, but some extended up to five hours after sunrise. [...]
Article
Capsule Vegetation characteristics determine seasonal habitat selection by Eurasian Blackcaps Sylvia atricapilla, Dartford Warblers Sylvia undata, and Sardinian Warblers Sylvia melanocephala, and changes in these characteristics affect the struc[...]
Article
Capsule Wetlands with little or no agricultural activity support higher breeding wader densities than more intensively farmed habitats within a nature-rich farmed landscape.Aims To test whether breeding wader densities differ between habitats li[...]
Article
Human activity and development in coastal environments can pose threats to pursuit-diving seabirds. This study demonstrates that rangefinder binoculars can be used to provide useful measurements of the behaviour and movement of European Shags Ph[...]
Article
We conducted a pilot study to investigate breeding dispersal and ranging behaviour of two adult female Great Grey Owls in central Belarus. The females stayed within a few kilometres of their breeding site and ranged only 2–3 km on average and at[...]
Article
Lei Zhang ;
Yaqi He ;
Ruiyao Ma ;
Yiting Jiang ;
Dongmei Wan ;
Wei Liang
Capsule The experimental removal of either the male or female from breeding pairs of Cinereous Tits Parus cinereus revealed that both sexes could increase their nestling provisioning rate to compensate fully for the loss. However, single females[...]
Article
Capsule During playback experiments, the distance from the surveyor to the call influences the chances of detection across nocturnal species in farmland and woodland habitats.Aim To evaluate how distance affects surveyor detection capability, ex[...]
Article
Capsule Resident populations, and great variation in annual abundance, distance moved, and orientation of movements, were observed in four species of tyrant flycatcher.Aims To investigate the seasonal movement of four tyrant flycatcher species, [...]
Article
Joy Coppes ;
Aaron Westhauser ;
Karl-Eugen Schroth ;
Veronika Braunisch ;
Marc I. Forschler ;
Rudi Suchant
Capsule Open forest stands with high levels of sunlight and Bilberry Vaccinium myrtillus cover are important for Capercaillie Tetrao urogallus broods.Aims To study the habitat use by Capercaillie broods in the Black Forest, Germany.Methods Habit[...]
Article
Capsule The distribution of breeding Whinchats Saxicola rubetra shifted uphill following the cessation of grazing, potentially compromising their breeding success through additional squeezing of suitable habitat and environmental niches.Aims To [...]
Article
Capsule Early male arrival on the breeding grounds results in early pairing but not early nesting in Chiffchaffs Phylloscopus collybita, and Chiffchaffs can nest, fail, and re-nest before Willow Warblers Phylloscopus trochilus begin nesting.Aims[...]
Article
Rob S.A. van Bemmelen ;
Hans Schekkerman ;
Vincent Hin ;
Morrison T. Pot ;
Kirstin Janssen ;
Barbara Ganter ;
Hans-Ulrich Rösner ;
Ingrid Tulp
Capsule The number of breeding pairs of Europe’s largest Arctic Skua Stercorarius parasiticus colony at Slettnes, Norway, showed a dramatic decline of at least 50% over two decades, with food shortage in four years and increasing predation by Re[...]
Article
Frédéric Jiguet ;
Pierrick Bocher ;
Helmut Kruckenberg ;
Steffen Kämpfer ;
Etienne Debenest ;
Romain Lorrilliere ;
Pierre Rousseau ;
Maciej Szajda ;
Heinz Düttmann
Capsule Migration associations by Eurasian Curlews Numenius arquata are temporary and last for single flight bouts between stopover sites.Aims Migrant shorebirds are known to initiate migration communally, with groups of birds departing simultan[...]
Article
Capsule Landfill sites can support a large and diverse bird community but the surrounding habitat and disturbance are also important in determining how sites are used.Aims To investigate the bird diversity, richness and abundance at an open wast[...]
Article
Capsule Nest construction by Common Redstarts Phoenicurus phoenicurus is affected by localized habitat.Aims This study investigated whether variation in nest construction observed over a wide geographical region would also be observed if birds w[...]
Article
Capsule Ring recoveries show no long-term changes in how far south Northern Gannets Morus bassanus migrate or which Large Marine Ecosystem (LME) they were recovered in over nine decades, but underestimate recovery distance compared to geolocatio[...]
