age determination; birds; breeding season; growth and development; nestlings; nests; plumage; reproductive performance
... The ability to accurately determine age of nestlings is useful in studies of reproductive performance of small birds. Because of a resurgence of interest in nest-box studies of reproductive performance of Prothonotary Warblers (Protonotaria citrea), we closely monitored the growth and development of 766 nestlings from 190 nests over the 1999 and 2000 breeding seasons. Distinguishing characteristic ...
Aquila; birds of prey; eagles; endangered species; humans; land use; microhabitats; national parks; nesting sites; nests; regression analysis; trees; Spain
... We examined nest-site selection by Spanish Imperial Eagles (Aquila adalberti) in Doñana National Park (southwestern Spain) from 1984–1994. Spanish Imperial Eagles are large birds of prey that defend and occupy a territory year-round. Identifying a territory's nest-site characteristics represents a critical step in safeguarding this endangered species' habitat. We measured seven habitat variables d ...
Bonter, David N., et al. ; Donovan, Therese M.; Beardmore, Carol J.; Brawn, Jeffrey D.; Cooper, Robert J.; Fitzgerald, Jane A.; Ford, Robert; Gauthreaux, Sidney A.; George, T. Luke; Hunter, W. C.; Martin, Thomas E.; Price, Jeff; Rosenberg, Kenneth V.; Vickery, Peter D.; Wigley, T. Bently; Show all 15 Authors
breeding; databases; funding; habitats; landscapes; managers; migratory behavior; prioritization; researchers; scientists; teachers; tropics; winter; United States
... Partners in Flight (PIF) is a consortium of professional and volunteer scientists and educators that promotes the conservation of landbird species. Central to the PIF conservation effort is the development of Bird Conservation Plans specific to each physiographic region of the United States. Without a coordinated prioritization of research needs, land managers, researchers, and funding agencies se ...