Titre : | Journal of Ornithology 149(3) - JUL 2008 |
Type de document : | Bulletin |
Paru le : | 00/00/0000 |
Dépouillements
Article
Lynn Siefferman, Auteur ;
Matthew D. Shawkey, Auteur ;
Reed Bowman, Auteur ;
Glen E. Woolfenden, Auteur
The Florida Scrub-Jay is a monogamous cooperative breeder in which both males and females display extensive structurally based blue plumage. Juveniles of this species exhibit blue tail and wing feathers that they begin growing as nestlings, and [...]
Article
Flora John Magige, Auteur ;
Borge Moe, Auteur ;
Eivin Roskaft, Auteur
Most ground nesters lay pigmented eggs, and egg pigmentation generally matches the environment. Pigmentation of eggs has evolved as a protective device against predation, but dark-pigmented eggs can be susceptible to overheating when exposed to [...]
Article
Simon Gillings, Auteur
Faunal and floral atlases can provide invaluable information on species distributions and relative abundance, and have played a key role in detecting and diagnosing population changes. Most atlases rely on simple but effective field methods that[...]
Article
Todd J. Underwood, Auteur ;
Spencer G. Sealy, Auteur
Many hosts of obligate brood parasites accept parasitic eggs despite the high costs of parasitism. Acceptance is particularly perplexing in brown-headed cowbird (Molothrus ater) (hereafter "cowbird") hosts because the eggs of cowbirds and most h[...]
Article
Joaquin Ortego, Auteur ;
Pedro J. Cordero, Auteur ;
Jose Miguel Aparicio, Auteur ;
Gustau Calabuig, Auteur
We studied the consequences of chronic infections by three different lineages of avian malaria, two Plasmodium (RTSR1, LK6) and one Haemoproteus (LK2), on reproductive performance of Lesser Kestrels (Falco naumanni). Malaria infections in male a[...]
Article
Emmanuel Revaz, Auteur ;
Michael Schaub, Auteur ;
Raphaël Arlettaz, Auteur
An effective strategy to reintegrate biodiversity within otherwise intensively cultivated agroecosystems is to create set-aside and wildflower areas. It remains largely unknown, however, whether the ecological performance of an agroecosystem rev[...]
Article
Miroslav Šálek, Auteur ;
Pavel Marhoul, Auteur
The Grey Partridge Perdix perdix is a sedentary species with a surplus of males in spring populations. It experienced a dramatic decline in Europe primarily due to habitat loss that may have forced the species to modify its dispersal behaviour, [...]
Article
David Robson, Auteur ;
Carles Barriocanal, Auteur
The present study examines the effects of seven microclimatic factors on the arrival body mass of migrant Barn Swallows (Hirundo rustica) in the Aiguamolls de l'Emporda Natural Park, a site located in northeastern Spain. We used principal compon[...]
Article
Elizabeth A. Farley, Auteur ;
Kathryn E. Sieving, Auteur ;
Thomas A. Contreras, Auteur
We developed sampling methods to characterize the participation of bird species in foraging flocks led by the Eastern Tufted Titmouse (Baeolophus bicolor) in North-central Florida during winter, because standard field methods, developed primaril[...]
Article
Swen C. Renner, Auteur ;
John H. Rappole, Auteur ;
Pamela C. Rasmussen, Auteur ;
Thein Aung, Auteur ;
Myint Aung, Auteur ;
Nay Myo Shwe, Auteur ;
John P. Dumbacher, Auteur ;
Robert C. Fleischer, Auteur
We collected several individuals of the Slaty-bellied Tesia Tesia olivea in the temperate rain forest of the sub-Himalayan region of northeastern Burma/Myanmar in February/March 2004 and March 2006. Subsequent comparison of these with T. olivea [...]
Article
Fabrice Dentressangle, Auteur ;
Gilles Poizat, Auteur ;
Alain Jean Crivelli, Auteur
Creching behaviour is common in colonial seabirds; nevertheless, the factors inducing chicks to aggregate remain relatively poorly understood. It has been proposed that brood size, laying date and nest attendance are important factors in the for[...]
Article
Radka Lezalova-Pialkova, Auteur ;
Marcel Honza, Auteur
Conspecific brood parasitism in birds occurs when a female inserts her egg into the clutch of her own species. If successful, i.e. the parasitic egg is accepted by the host, then the host female or pair rears the offspring of the parasite. In th[...]
Article
Friederike Woog, Auteur ;
Michael Wink, Auteur ;
Eskandar Rastegar-Pouyani, Auteur ;
Javier Gonzalez, Auteur ;
Barbara Helm, Auteur
Stonechats (genus Saxicola) are passerine birds with an extraordinarily large breeding distribution. Recent studies provide strong evidence that the taxon shows far greater geographic differentiation than originally suspected, with African, Sibe[...]
Article
Lorna M. Shaw, Auteur ;
Dan Chamberlain, Auteur ;
Matthew Evans, Auteur
The House Sparrow Passer domesticus is traditionally associated with human habitation. However, the species has undergone dramatic declines in many urban areas in north-western Europe. There are many theories as to why this decline has occurred,[...]
Article
Robert M. Zink, Auteur ;
Alexandra Pavlova, Auteur ;
Sergei Drovetski, Auteur ;
Sievert Rohwer, Auteur
Five species of Eurasian birds displayed a range of mitochondrial DNA phylogeographic structures, including a single widespread lineage (common sandpiper), two geographically unsorted and closely related lineages (long-tailed tit), three partial[...]
Article
Javier Gonzalez, Auteur ;
Michael Wink, Auteur
Parallelisms and paraphyletic assemblages are common among ovenbirds. Molecular markers are therefore the best approach when studying the evolutionary relationships among the members of this unparalleled diversified family. We obtained nucleotid[...]
Article
Anna L. K. Nilsson, Auteur ;
Thomas Alerstam, Auteur ;
Jan-Ake Nilsson, Auteur
The knowledge of migration systems in long-distance regular migrants is in many cases extensive. Our understanding of the migratory characteristics of partial migrants, on the other hand, is far more rudimentary. We investigated migratory charac[...]
Article
Wesley M. Hochachka, Auteur ;
Wolfgang Fiedler, Auteur
We examined ringing data for three common passerines at a migration monitoring site with the objective of determining how closely the numbers of birds captured reflected the actual numbers of birds passing through this site. Mark-recapture analy[...]