| Titre : | Swallow Hirundo rustica population trends in England: data from repeated historical surveys (2003) |
| Auteurs : | K. L. Evans, Auteur ; J. D. Wilson, Auteur ; R. B. Bradbury, Auteur |
| Type de document : | Article |
| Dans : | Bird Study (50 JUL 2003) |
| Article en page(s) : | 178-181 |
| Langues: | Anglais |
| Résumé : | Capsule The variation in population trends (-86% to +236%) between surveys during 1964-81 and in 1999 and 2000 can be explained by nest-site loss, and possibly agricultural intensification. |



