Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/103678
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Seasonal variation in sex ratio of fledgling American Kestrels: A long term study |
Autor: | Griggio, Matteo; Hamerstrom, Frances; Rosenfield, Roberta N.; Tavecchia, Giacomo CSIC ORCID | Palabras clave: | Aves Juvenile Raptor Seasonal variations Sex ratio Raptores Falco sparverius Falco |
Fecha de publicación: | dic-2002 | Editor: | Wilson Ornithological Society | Citación: | Wilson Bulletin 114(4): 474-478 (2002) | Resumen: | The Early Bird Hypothesis predicts that males fledged early in the breeding season have an advantage over their later-fledged counterparts during competition for breeding sites. We tested this hypothesis by examining the sex ratio of 1,025 fledglings from 265 broods of American Kestrels (Falco sparverius) breeding in nest boxes in Wisconsin during the period 1968-1997. We found a seasonal shift in the sex ratio: the sex ratio of fledglings was biased toward males early in the breeding season, but became increasingly biased toward females as the season progressed. Our results provide support for the Early Bird Hypothesis and suggest that the steepness of this trend may decrease with increasing latitude. | Versión del editor: | http://dx.doi.org/10.1676/0043-5643(2002)114[0474:SVISRO]2.0.CO;2 | URI: | http://hdl.handle.net/10261/103678 | DOI: | 10.1676/0043-5643(2002)114[0474:SVISRO]2.0.CO;2 | Identificadores: | doi: 10.1676/0043-5643(2002)114[0474:SVISRO]2.0.CO;2 issn: 0043-5643 |
Aparece en las colecciones: | (IMEDEA) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
accesoRestringido.pdf | 15,38 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
WEB OF SCIENCETM
Citations
22
checked on 22-feb-2024
Page view(s)
267
checked on 18-abr-2024
Download(s)
121
checked on 18-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.