| Titre : | Journal of Field Ornithology 83(1) - FEB 2012 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Andrew C. Vitz, Auteur ;
Amanda D. Rodewald, Auteur
Use of early successional habitat by mature forest birds during the postfledging period is well documented, but reasons for this habitat shift remain elusive. Although forest-breeding songbirds are primarily insectivorous during the nestling and[...]
Article
J. Dylan Maddox, Auteur ;
Patrick J. Weatherhead, Auteur
Multiple factors potentially affect nestling survival and maternal reproductive success. However, little is known about the relative importance of different factors when operating simultaneously or whether the same factors are important for nest[...]
Article
Richard A. Fischer, Auteur ;
Sidney A. Gauthreaux, Auteur ;
Jonathon J. Valente, Auteur ;
Michael P. Guilfoyle, Auteur ;
Michael D. Kaller, Auteur
For decades, researchers have successfully used ground-based surveys to understand localized spatial and temporal patterns in stopover habitat use by migratory birds. Recent technological advances with WSR-88D radar now allow such investigations[...]
Article
Tomas A. Carlo, Auteur ;
Raul A. Perez-Rivera, Auteur ;
Jason M. Gelditsch, Auteur
Folivory, or eating leaves, is unusual for small passerines. Puerto Rican Spindalises (Spindalis portoricensis, Thraupidae), tanagers endemic to the island of Puerto Rico, are known to feed on leaves, but little is known about the possible impor[...]
Article
Zoltán Németh, Auteur ;
Frank R. Moore, Auteur
Hummingbird migration has long fascinated researchers due to the limitations of small body size and high metabolic rate on migratory performance. Yet, few data are available concerning hummingbird migration strategies, especially for species tha[...]
Article
Karine C. Gil-Weir, Auteur ;
William E. Grant, Auteur ;
R. Douglas Slack, Auteur ;
Hsiao-Hsuan Wang, Auteur ;
Masami Fujiwara, Auteur
Previous studies of Whooping Crane demography used estimates of fecundity rates based on females in captivity, and breeding success was estimated based on either the number of unbanded pairs nesting or the number arriving in wintering areas with[...]
Article
Luis M. Enriquez-Paredes, Auteur ;
Carmel Vilanova, Auteur ;
Guillermo Fernández, Auteur
Although Western Sandpipers (Calidris mauri) are one of the best-studied shorebirds along the Pacific Flyway, their genetic identity and population structure is poorly known. We studied the genetic population structure of nonbreeding Western San[...]
Article
Rachel T. Buxton, Auteur ;
Ian L. Jones, Auteur
Nocturnal burrow-nesting seabirds breeding on isolated oceanic islands pose challenges to conventional monitoring techniques, resulting in their frequent exclusion from population studies. These seabirds have been devastated by nonnative predato[...]
Article
Christopher W. Briggs, Auteur ;
Michael W. Collopy, Auteur
Although passerines have been relatively well studied and many species found to exhibit relatively high rates of extra-pair paternity (EPP), less is known about the frequency of EPP in other avian taxa, including raptors. From 2008 to 2010, we e[...]
Article
Pauli Saag, Auteur ;
Priit Kilgas, Auteur ;
Marko Maegi, Auteur ;
Vallo Tilgar, Auteur ;
Raivo Maend, Auteur
Plumage bacteria may play an important role in shaping the life histories of birds. However, to design suitable experiments to examine causal relationships between plumage bacteria and the fitness of host birds, natural variation in plumage bact[...]
Article
Glen H. Mittelhauser, Auteur ;
Lindsay Tudor, Auteur ;
Bruce Connery, Auteur
Although within-year site fidelity to specific wintering sites allows shorebirds to use prior knowledge of resources and microhabitats, such fidelity may also make populations more vulnerable to extirpation in the event of increased predation pr[...]
