English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/58091
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Protective association and breeding advantages of choughs nesting in lesser kestrel colonies

AuthorsBlanco, Guillermo ; Tella, José Luis
Issue Date1997
PublisherAcademic Press
CitationAnimal Behaviour 54: 335- 342 (1997)
AbstractSome bird species may breed close to aggressive predators to reduce predation risk by more dangerous, generalist predators. We tested this protective nesting association hypothesis by studying solitary choughs, Pyrrhocorax pyrrhocorax, breeding within or outside lesser kestrel, Falco naumanni, colonies in northern Spain (1993-1994). We found 27 potential predators of choughs and kestrels and confirmed predation, on adults and nests of both species by at least eight common predators. We experimentally assessed the defence investment of choughs and kestrels towards a stuffed eagle owl, Bubo bubo, in 19 buildings shared by both species. Lesser kestrels were more efficient at detecting the predator, and defended more vigorously than choughs. Choughs clearly selected for breeding buildings where lesser kestrel colonies were installed. Breeding success of these choughs was much higher man that of choughs breeding alone, because of a lower percentage of nest failure. Benefits to choughs probably accrued from both the 'parasitism' of the kestrels' nest defence and the dilution of predation risk in the colonies. Since lesser kestrels do not prey on choughs, this could be a good example of protective nesting association in birds.
URIhttp://hdl.handle.net/10261/58091
DOI10.1006/anbe.1996.0465
Identifiersdoi: 10.1006/anbe.1996.0465
issn: 0003-3472
Appears in Collections:(EBD) Artículos
Files in This Item:
File Description SizeFormat 
animbehav.doc5,58 MBMicrosoft WordView/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.