| Titre : | Bird Study 68(3) - July, 2021 |
| Type de document : | Bulletin |
| Paru le : | 03/07/2021 |
Dépouillements
Article
Steven P. Campbell, Auteur ;
Michael E. Akresh, Auteur ;
Neil A. Gifford, Auteur ;
David I. King, Auteur
Capsule In a single-year study, attaching geolocators to male Prairie Warblers Setophaga discolor, one of the smallest species to date to carry geolocators, decreased return rates but had no effect on inter-annual territory fidelity.Aims To exam[...]
Article
Ken W. Smith, Auteur
Article
Roberto G. Valle, Auteur ;
Affef Baaloudj, Auteur ;
Francesco Scarton, Auteur
This study describes a new method for counting breeding Purple Herons Ardea purpurea on a large wetland complex (Po Delta, Italy) using Google Earth satellite imagery in comparison to traditional ground counts in 2017. Google Earth counts provid[...]
Article
Oldřich Mikulica, Auteur ;
Alfréd Trnka, Auteur
Using direct observations of Common Cuckoo Cuculus canorus behaviour at 53 nests of three Acrocephalus host species, we recorded no vocal activity by females shortly before, during, or after egg-laying, which suggests that female bubbling calls [...]
Article
Alan McCarthy, Auteur ;
Pat Smiddy, Auteur ;
Tony Nagle, Auteur ;
Allan Mee, Auteur ;
Sandra Irwin, Auteur ;
Anthony Caravaggi, Auteur ;
John O’Halloran, Auteur
Capsule Habitat composition plays a key role in determining the winter diet of the Hen Harrier Circus cyaneus, which varies across the winter season and between years.Aims To determine the winter diet of the Hen Harrier and examine temporal and [...]
Article
Jan van der Winden, Auteur ;
Niels Hogeweg, Auteur ;
Edwin Baaij, Auteur ;
Peter W. van Horssen, Auteur ;
Judy Shamoun-Baranes, Auteur ;
René Vos, Auteur ;
Theunis Piersma, Auteur
Capsule Migration studies of tagged Eurasian Bitterns Botaurus stellaris provide information on the behaviour of this secretive species in relation to weather conditions.Aims To study if cold spells trigger southward migration in resident Eurasi[...]
Article
Roumayssa Ziani, Auteur ;
Amel LAZLI, Auteur ;
Faïza Marniche, Auteur ;
Borhane-Eddine Cherif Ziani, Auteur ;
Bilal Dik, Auteur
Capsule The distribution and prevalence of chewing lice found on Common Moorhens Gallinula chloropus varied between seasons and peaked during the winter. There was also significant variation in how lice were distributed around the body regions o[...]
Article
Vladimir Ivanitskii, Auteur ;
Irina Syomina, Auteur ;
Irina Ilina, Auteur ;
Irina Marova, Auteur ;
Ilya Kislyakov, Auteur
Capsule Although many acoustic signals of Common Chaffinches Fringilla coelebs, including both songs and rain calls, are widespread across its distribution range, the boundaries between subspecies place formidable obstacles to the spread of voca[...]
Article
Jan Škrábal, Auteur ;
Ivan Literák, Auteur ;
Marek Dostál, Auteur ;
Rainer Raab, Auteur ;
David Horal, Auteur ;
Hynek Matušík, Auteur ;
Peter Spakovszky, Auteur
Capsule Some birds of the central European population of Red Kite Milvus milvus are non-migratory and winter within their natal area, whereas others migrate to southern Europe or even to northern Africa.Aims To determine what factors affect the [...]
Article
Carlo Catoni, Auteur ;
Roberto Aguilar-Pulido, Auteur ;
Carlos Zavalaga, Auteur ;
Giacomo Dell’omo, Auteur
Capsule Grey Gulls Leucophaeus modestus breed in the Atacama Desert, Chile, and perform nocturnal commuting flights between their inland nesting sites and the coast in order to forage. Some aspects of the gullś flight patterns and routes remain [...]
Article
Dietrich Stoyan, Auteur ;
Winfried Nachtigall, Auteur
Capsule The density of Common Tern Sterna hirundo nests on artificial islands was increased by the provision of chick shelters, which influenced the placement of nests.Aims To understand the nest placement behaviour underlying the distribution o[...]
Article
Tina Petras, Auteur ;
Al Vrezec, Auteur
Capsule Long-term and non-standardized migratory bird ringing data can be used in models controlling variation in bird ringing methodology for reliable population trend estimations.Aims Bird ringing data usually cover long periods and might refl[...]
Article
Uģis Bergmanis, Auteur ;
Ainars Aunins, Auteur
Capsule Small rodents and amphibians are both important prey items for the Lesser Spotted Eagle Clanga pomarina, and their proportions in the diet depend on their local availability, as well as the degree of involvement of the female in food pro[...]
Article
Michał Budka, Auteur ;
Patryk Kokociński, Auteur
Capsule The vocal activity of Common Cranes Grus grus varies with time of day, season, population abundance, and nesting habitat area, and consequently affects the accuracy and precision of single survey estimates of breeding population size.Aim[...]
Article
Ian D. Woodward, Auteur ;
Graham E. Austin, Auteur ;
Philipp H. Boersch-Supan, Auteur ;
Chris B. Thaxter, Auteur ;
Niall H.K. Burton, Auteur
Capsule We assessed annual changes in Eurasian Curlew Numenius arquata wintering numbers at estuaries in England and Wales over 40 years against local and broadscale factors. Long-term trends likely reflect the cessation of hunting, but potentia[...]
