Birds of Indian Subcontinent

Hybridization between House and Tree Sparrow ( Passer domesticus , P. montanus )

Publication Type:Journal Article
Year of Publication:1993
Authors:Cordero, PJ, J. Summers-Smith, D
Journal:Journal of Ornithology
Date Published:1993
ISBN Number:2193-7192
Keywords:Passer, Passer domesticus, Passer montanus, Passeridae, Spain
Abstract:Summary An analysis is made of hybridization between the House Sparrow Passer domesticus and Tree Sparrow P. montanus based on a long-term breeding study in Spain and a survey of the published literature. The field study, in which hybrids were detected by phenotypes, gave a rate of hybridization close to 1:500. The majority of literature records of hybrids between these species are from areas where one is uncommon; there is no evidence for natural cross-fostering. We suggest that mate restriction is the most likely reason for mixed-pair formation and hybridization in these sparrows.
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith