| Titre : | Journal of Field Ornithology 84(2) - JUN 2013 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Amy L. Scarpignato, Auteur ;
T. Luke George, Auteur
Little is known about space use by Common Ravens (Corvus corax) in coastal old-growth redwood (Sequoia sempervirens) forests in northern California despite their identification as nest predators of federally threatened Marbled Murrelets (Brachyr[...]
Article
Eli S. Bridge, Auteur ;
Jeffrey F. Kelly, Auteur ;
Andrea Contina, Auteur ;
Richard M. Gabrielson, Auteur ;
Robert B. MacCurdy, Auteur ;
David W. Winkler, Auteur
Light-level geolocation data loggers, or geologgers, have recently been miniaturized to the extent that they can be deployed on small songbirds, allowing us to determine many previously unknown migration routes, breeding locations, and wintering[...]
Article
John W. Chardine, Auteur ;
Jean-Francois Rail, Auteur ;
Sabina Wilhelm, Auteur
Northern Gannet (Morus bassanus) colonies (N = 6) in North America have been regularly censused since the late-1960s. Monitoring populations of a top-predator like gannets provides insight into possible changes in the marine environment and cont[...]
Article
Valerie Miller, Auteur ;
Kenneth F. Abraham, Auteur ;
Erica Nol, Auteur
During incubation, Canada Geese (Branta canadensis) and other waterfowl flush from their nests in response to the approach of potential predators and subsequently return to nests after the threat of predation has abated. Differences among indivi[...]
Article
Laurel L. Moulton, Auteur ;
George M. Linz, Auteur ;
William J. Bleier, Auteur
Red-winged Blackbirds (RWBL; Agelaius phoeniceus) have a polygynous mating system and, because territorial males commonly have harems of two to five females, some second-year (SY) and after-second-year (ASY) males do not establish nesting territ[...]
Article
Lance G. Woolaver, Auteur ;
Rina K. Nichols, Auteur ;
Eugene S. Morton, Auteur ;
Bridget J. M. Stutchbury, Auteur
Ridgway's Hawks (Buteo ridgwayi) are critically endangered forest raptors endemic to the Caribbean island of Hispaniola, with approximate to 100 pairs remaining in the world. The species is ecologically little known yet such studies are importan[...]
Article
Jennifer A. H. Koop, Auteur ;
Dale H. Clayton, Auteur
Two methods commonly used to quantify ectoparasites on live birds are visual examination and dust-ruffling. Visual examination provides an estimate of ectoparasite abundance based on an observer's timed inspection of various body regions on a bi[...]
Article
Pierre Legagneux, Auteur ;
Alice-Anne Simard, Auteur ;
Gilles Gauthier, Auteur ;
Joel Bety, Auteur
Markers are widely used to study behavior, migration, and the life history traits of birds such as survival, dispersal, and reproductive success. The presence of neck collars has been shown to impact the breeding propensity of adult female Great[...]
Article
Mark Vukovich, Auteur ;
John C. Kilgo, Auteur
Fall migration of Red-headed Woodpeckers (Melanerpes erythrocephalus) can be erratic, with departure rates, directions, and distances varying among populations and individuals. We report fall migration departure dates, rates, and routes, and the[...]
Article
Bruce E. Byers, Auteur ;
Brodie A. Kramer, Auteur ;
Michael E. Akresh, Auteur ;
David I. King, Auteur
Song development in oscine songbirds relies on imitation of adult singers and thus leaves developing birds vulnerable to potentially costly errors caused by imitation of inappropriate models, such as the songs of other species. In May and June 2[...]
