| Titre : | Journal of Field Ornithology 91(2) - 2020 |
| Type de document : | Bulletin |
| Paru le : | 01/09/2020 |
Dépouillements
Article
Richard L. Hutto, Auteur ;
Russell R. Hutto, Auteur
The approach or presence of an observer may affect the behavior of nearby birds, rendering them either more or less detectable than when no observer is present due to a change in singing rates. To test whether there are systematic detection bias[...]
Article
Maya Wilson, Auteur ;
Jeffrey R. Walters, Auteur
Bird populations, especially on islands, have declined or gone extinct due to overhunting, habitat loss and fragmentation, and adverse effects of the introduction of non-native species. Bahama Swallows (Tachycineta cyaneoviridis), endangered sec[...]
Article
Michael P. Lombardo, Auteur ;
Patrick A. Thorpe, Auteur ;
Sango Otieno, Auteur ;
Alyssa Hawker, Auteur ;
Dan Welgarz, Auteur ;
Danielle Andrews, Auteur ;
Amanda Black, Auteur
Identifying factors that influence the chances of fledglings becoming local recruits can inform us about the ecology of population dynamics and factors influencing parental fitness. We studied Tree Swallows (Tachycineta bicolor) nesting in boxes[...]
Article
Loren Merrill, Auteur ;
Stephen A. Tyndel, Auteur ;
Michael P. Ward, Auteur ;
Thomas J. Benson, Auteur ;
Jinelle H. Sperry, Auteur
Researchers and managers have used the tendency of some species of birds to settle near conspecifics (i.e., conspecific attraction) to help establish or reestablish species of conservation concern in targeted habitats. However, most studies of c[...]
Article
Chelsea E. Weithman, Auteur ;
James D. Fraser, Auteur ;
Sarah M. Karpanty, Auteur ;
Daniel H. Catlin, Auteur
Mobility of precocial chicks facilitates self-feeding and escape from predators, but also allows chicks to move into potentially dangerous areas. At Cape Hatteras National Seashore and Pea Island National Wildlife Refuge, North Carolina, precoci[...]
Article
Amy C. Schwarzer, Auteur ;
W. Andrew Cox, Auteur ;
Brett Tornwall, Auteur
Salt marshes and the organisms that depend on them are subject to a variety of anthropogenic threats. In Florida, Worthington’s Marsh Wrens (Cistothorus palustris griseus) and MacGillivray’s Seaside Sparrows (Ammospiza maritima macgillivraii) ar[...]
Article
José Alfredo Castillo‐Guerrero, Auteur ;
Alberto Piña‐Ortiz, Auteur ;
Luis Enríquez‐Paredes, Auteur ;
Albert M. van der Heiden, Auteur ;
Salvador Hernández‐Vázquez, Auteur ;
Nancy C. Saavedra‐Sotelo, Auteur ;
Guillermo Fernández, Auteur
Understanding genetic structure and gene flow can elucidate the mechanisms of diversification and adaptation in seabirds and help define conservation and management units. From 2012 to 2016, we collected blood and feather samples from 156 Red-bi[...]
Article
Eleanor P. Gaines, Auteur ;
Stephen J. Dinsmore, Auteur ;
Michael T. Murphy, Auteur
Understanding the factors contributing to variation in demographic parameters and their influences on population growth is fundamental to effective conservation of small populations, but this information is often not available. Among shorebirds,[...]
Article
Henry S. Pollock, Auteur ;
Todd M. Jones, Auteur ;
Corey E. Tarwater, Auteur ;
Elise T. Nishikawa, Auteur ;
Jeffrey D. Brawn, Auteur
Ecological disturbance is an important factor that influences the abundance and distribution of species. Treefalls are a prominent source of disturbance in tropical forests, but robust characterization of community change after treefalls require[...]
