| Titre : | Inter-locality variation in the reproductive ecology of the Linnet, Carduelis cannabina (Linnaeus, 1758) (Aves : Fringillidae), in Jordan (2007) |
| Auteurs : | Abdel Razzaq Al-Hmoud, Auteur ; Mohammed Janaydeh, Auteur ; Said Damhoureyeh, Auteur ; Fares Khoury, Auteur |
| Type de document : | Article |
| Dans : | Zoology in the Middle East (42 2007) |
| Article en page(s) : | 47-58 |
| Résumé : | The breeding ecology of Linnets (Carduelis cannabina bella) was studied at three study areas in open Mediterranean scrub habitats and in large and irrigated olive plantations located in an and environment. Breeding parameters at all of the study areas (clutch size, incubation and nestling periods, number of broods per season) were within the range described for other southern populations. Accessibility to a rich food supply at the onset of the breeding season, which coincided with the end of the rainy season, a constant water supply and the presence of woody plants with foliage providing some concealment, appeared to be important cues in the selection of nesting sites by Linnets at the study areas. In the study area with a Mediterranean climate, Linnets built their nests in native shrubs and dwarf shrubs, while in the olive plantations Linnets built nests in young olives and conifers, as well as mature olive trees. Reproductive success did not vary significantly among the study areas, although it appeared to be higher in mature olive plantations than in young plantations. Nest concealment was related to nesting success in two study areas and the main cause of nest failure was predation at all three sites. Our results suggest that Linnets colonizing novel habitats in and regions retain responses to certain environmental cues when selecting nesting sites and that these responses have evolved in the natural habitats in which the species is confronted with a rich guild of nest-predators. |
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