English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/96963
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 | DATACITE
Exportar a otros formatos:


Hole selection by nesting swifts in medieval city-walls of central Spain

AuthorsCorrales, Luis; Bautista, Luis M. ; Santamaría, Tomás; Mas, Pedro
KeywordsApus apus
common swift
nest selection
Issue Date2013
PublisherSociedad Española de Ornitología
CitationArdeola: revista ibérica de ornitología
AbstractDisturbance and predation risks from terrestrial animals decline the higher up the nest sites selected by birds that nest in wall cavities are located. Terrestrial predators can also negate the protective quality of higher nesting sites by approaching from above in walls. It is unknown how terrestrial predation risks from below and above walls determine nest site selection in cavity-nesting species. In relation to this situation, we describe nest-site selection in common swifts Apus apus in the medieval city walls of Ávila, Spain. We recorded the entry size, hole depth and the horizontal and vertical positions of cavities. Most cavities were empty despite their size being suitable for nesting. Swifts nested in cavities at least 12 cm deep and with an entry between 3.5 cm and 13 cm wide. Nests were 3.5 m above the ground and 1.7 m below the top of the wall, although there were suitable cavities at the lower and higher extremes, respectively. Higher predation risks and disturbances could explain why suitable cavities were empty at lower and higher heights. The distances to the ground and to the top of the wall, as well as the distance to the nearest corner, accounted for about one-tenth of the probability that a cavity was used for nesting. Our data do not indicate a possible reason for nesting near corners, but weather is an obvious candidate.
DescriptionArdeola 60(2):291-304. 2013
Publisher version (URL)http://dx.doi.org/10.13157/arla.60.2.2013.291
Appears in Collections:(MNCN) Artículos
Files in This Item:
File Description SizeFormat 
Corrales Ardeola60 p291 2013.pdf563,32 kBAdobe PDFThumbnail
Show full item record
Review this work

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