English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/43767
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 20 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)
Título

Family-based territoriality vs flocking in wintering common cranes Grus grus

Autor Alonso López, Juan C. ; Bautista, Luis M. ; Alonso López, Javier A.
Palabras clave Common cranes
Grus grus
Winter territoriality
Fecha de publicación sep-2004
EditorWiley-Blackwell
Citación Journal of Avian Biology 35(5): 434-444,
ResumenWe describe winter territoriality in common cranes, Grus grus, a long-lived migrant species with long-lasting pair bonds and parental care extending throughout the winter. Cranes are territorial in the breeding season, and usually gregarious during migration and wintering. Only 2% of the families present in our study area were territorial, all other families foraged in flocks with immatures and adult pairs. Territorial pairs defended the same winter territory year after year, but only when they had offspring. They were gregarious otherwise. The average breeding success measured throughout several years was higher in territorial pairs. Winter territories were small (0.7 km2 on average), but included a higher diversity of habitats than the areas visited by gregarious birds (11.7 km2 on average). Adults of territorial families showed longer vigilance times, and lower food intake rates than did adults in flocks, which were compensated with a longer time spent foraging per day. The accumulated daily food intake did not differ between adults in flocks and in families. We suggest that winter territoriality is a facultative strategy, conditioned by parental experience and habitat availability.
Versión del editorhttp://onlinelibrary.wiley.com/doi/10.1111/j.0908-8857.2004.03290.x/full
URI http://hdl.handle.net/10261/43767
DOI10.1111/j.0908-8857.2004.03290.x
ISSN1600-048X
Aparece en las colecciones: (MNCN) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo
 



NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.