| Titre : | Journal of Field Ornithology 80(4) - DEC 2009 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Richard L. Hutto, Auteur ;
Ryan J. Stutzman, Auteur
There is growing interest in the potential use of autonomous recording units (ARUs) to obtain point-count bird survey data in the absence of human observers. To determine possible reasons for differences in the point-count performances of humans[...]
Article
Jennifer L. Zangmeister, Auteur ;
Mark F. Haussmann, Auteur ;
Jack Cerchiara, Auteur ;
Robert A. Mauck, Auteur
The nocturnal activity of burrow-nesting seabirds, such as storm-petrels and shearwaters, makes it difficult to study their incubation behavior. In particular, little is known about possible differences in the incubation behavior of adults at su[...]
Article
Lauren F. Rae, Auteur ;
Greg W. Mitchell, Auteur ;
Robert A. Mauck, Auteur ;
Christopher G. Guglielmo, Auteur ;
D. Ryan Norris, Auteur
Radio telemetry can be a valuable tool for studying the behavior, physiology, and demography of birds. We tested the assumption that radio transmitters have no adverse effects on body condition in an island population of Savannah Sparrows (Passe[...]
Article
Betsy A. Evans, Auteur ;
Tex A. Sordahl, Auteur
Many birds roost communally during at least part of their annual cycle, suggesting that for them the advantages of living in a group outweigh the disadvantages. However, perch sites within a roost may vary in quality because of differences in de[...]
Article
Airam Rodriguez, Auteur ;
Juan J. Negro, Auteur ;
James W. Fox, Auteur ;
Vsevolod Afanasyev, Auteur
Light level geolocators, also known as GLS loggers, are electronic devices intended for tracking the location of wide-ranging animals using ambient light to estimate latitude and longitude. Miniaturized geolocators that can be used on relatively[...]
Article
Lujan Villanueva-Gomila, Auteur ;
Alejandro Gatto, Auteur ;
Karina Cabral, Auteur ;
Pablo Yorio, Auteur
Infanticide and nonfatal aggression by adults toward unfamiliar chicks have been widely reported in colonial birds, and can be an important cause of chick mortality. We studied intraspecific aggression by adults toward chicks at a South American[...]
Article
American Crows (Corvus brachyrhynchos) are difficult to capture. I used a simple technique (box traps) to capture 151 crows incidental to my eastern coyote (Canis latrans) research at two study sites in eastern Massachusetts. Crows were captured[...]
Article
Richard A. McKinney, Auteur ;
Peter W. C. Paton, Auteur
Seasonal pools in the northeastern United States provide habitat for amphibians and invertebrates, but little is known about their importance as habitat for birds. We examined avian community composition at seasonal pools in Rhode Island to test[...]
Article
Andrea A. Astié, Auteur ;
Juan C. Reboreda, Auteur
Avian brood parasites usually remove or puncture host eggs. Several hypotheses have been proposed to explain the function of these behaviors. Removing or puncturing host eggs may enhance the efficiency of incubation of cowbird eggs (incubation-e[...]
Article
Kevin P. Kenow, Auteur ;
J. Marshall Wilson, Auteur ;
Michael W. Meyer, Auteur
Several techniques have been used to capture Common Loons (Gavia immer), but effectiveness is limited during periods of the breeding season when loons do not have chicks. From 2005 to 2008, we studied loons in northern Wisconsin and used night l[...]
Article
David L. Swanson, Auteur ;
Jeffrey S. Palmer, Auteur
In apparent response to recent periods of global warming, some migratory birds now arrive earlier at stopover sites and breeding grounds. However, the effects of this warming on arrival times vary among locations and species. Migration timing is[...]
Article
P. Dee Boersma, Auteur ;
Ginger A. Rebstock, Auteur
Flipper bands are used to mark penguins because leg bands can injure their legs. However, concerns remain over the possible effects of flipper bands on penguins. We examined the effects of stainless-steel flipper bands on the duration of foragin[...]
Article
Christiana M. A. Faria, Auteur ;
Marcos Rodrigues, Auteur
Little is known about the birds associated with army-ant swarms in the Brazilian Atlantic forest. Our objectives were to locate and monitor army-ant swarms in the Atlantic rainforest of Brazil and to identify the species of birds that attended t[...]
Article
Miguel A. Martinez-Morales, Auteur ;
Pablo C. Cruz, Auteur ;
Alfredo D. Cuaron, Auteur
We assessed the current conservation status and population trends of Cozumel Curassows (Crax rubra griscomi), a critically endangered and endemic cracid of Cozumel Island, Mexico. Distance sampling was used to estimate the population size in 200[...]
