| Titre : | Journal of Field Ornithology 80(3) - SEP 2009 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Jorge H. Vega Rivera, Auteur ;
Irais Medina Montano, Auteur ;
John Rappole, Auteur ;
Felipe Campos Cerda, Auteur
Nest concealment by vegetation is considered an important factor affecting predation rates for many passerines and, therefore, is frequently measured in studies examining nest predation. However, the time when concealment measurements are made m[...]
Article
Mark Vukovich, Auteur ;
John C. Kilgo, Auteur
Previous studies have revealed that radio-transmitters may affect bird behaviors, including feeding rates, foraging behavior, vigilance, and preening behavior. In addition, depending on the method of attachment, transmitters can potentially affe[...]
Article
Nathaniel E. Seavy, Auteur ;
Michelle H. Reynolds, Auteur
Counts of nesting birds are often used to monitor the abundance of breeding pairs at colonies. Mean incubation counts (MICs) are counts of nests with eggs at intervals that correspond to the mean incubation period of a species. The sum of all co[...]
Article
Catherine D. Haffner, Auteur ;
Francesca J. Cuthbert, Auteur ;
Todd W. Arnold, Auteur
Identifying and protecting breeding habitat for imperiled species requires an understanding of the spatial and temporal movements of breeding individuals. During the 2003 and 2004 breeding seasons, we examined space use by Piping Plovers (Charad[...]
Article
Different scoring systems have been developed for assessing fat stores in birds. Most have been used with passerines, and there is no widely used standard for studies of shorebirds. I developed a new fat-scoring classification scheme for shorebi[...]
Article
Sarah E. Lehnen, Auteur ;
Amanda D. Rodewald, Auteur
Dispersal events can affect the distribution, abundance, population structure, and gene flow of animal populations, but little is known about long-distance movements due to the difficulty of tracking individuals across space. We documented the n[...]
Article
Laura McKinnon, Auteur ;
Joel Bety, Auteur
Monitoring bird nests with cameras provides an opportunity to identify the cause of nest failure and record the behavior of individuals. However, leaving an object continuously within sight of a nest could have potential negative effects on nest[...]
Article
High rates of brood parasitism are generally associated with agricultural landscapes, but recent evidence suggests that urbanization may also increase the likelihood of brood parasitism. I evaluated the extent to which brood parasitism by Brown-[...]
Article
Sprague's Pipits (Anthus spragueii) are one of the least studied birds in North America, with most information about their breeding biology based on anecdotal observations at relatively few nests. I determined the renesting intervals of female S[...]
Article
Andrea A. Astié, Auteur ;
Juan C. Reboreda, Auteur
The reproductive success of parasitic cowbirds (Molothrus spp.) varies among host species and is influenced by the degree of synchronization in timing of egg laying, the duration of parasite and host incubation periods, and the ability of hosts [...]
Article
Michaela Martin, Auteur ;
Alaine F. Camfield, Auteur ;
Kathy Martin, Auteur
Although Savannah Sparrows (Passerculus sandwichensis) have been well studied across their North American range, few data are available for populations that breed in high-elevation habitats. We collected data over six years on the demography of [...]
Article
Noemi Esther Huanca, Auteur ;
Peter A. Hosner, Auteur ;
A. Bennett Hennessey, Auteur
Cochabamba Mountain-Finches (Compsospiza garleppi) are endangered residents of semihumid shrublands in the high Andes, with a range restricted to a few high valleys surrounding the city of Cochabamba, Bolivia. We examined the breeding behavior, [...]
