| Titre : | Nesting habits and reproductive success of the laughing dove streptopelia senegalensis in the oases of Southern Tunisia |
| Auteurs : | J Boukhrlss, Auteur ; Slaheddine Selmi, Auteur |
| Type de document : | Article |
| Dans : | Alauda (77 janvier 1, 2009) |
| Article en page(s) : | 187-192 |
| Résumé : | Nesting Habits and Reproductive success of the Laughing Dove Streptopelia senegalensis in the Oases of Southern Tunisia. The Laughing Dove Streptopelia senegalensis has widely expanded its geographic range in North Africa. It is nowadays the most common and widespread bird species in Tunisian oases. However, little is known about its breeding ecology despite the importance of such information for the understanding of the dynamics of this invasive species. In this paper we present data on nesting behaviour and breeding success of the Laughing Dove in one oasis in south-eastern Tunisia. Our observations show that the breeding season of this species spreads from February until August, with rare nesting attempts observed in autumn and even in winter periods. The Laughing Dove seems to select areas with moderate vegetation density for nesting, showing a clear preference for fruit trees, particularly pomegranate trees (56% of all nests found) and olive trees (38% of all nests found). Nests are built at an average height of 2.58 ± 0.09 m and are generally oriented to the south-east. 61% of nesting attempts were successful. Failures are mainly due to predation, particularly by mammals (rodents, semi-domestic cats and genet). Our results also suggest that nests built on the densest trees present the highest risk of predation by mammals. This result could be explained by the fact that these trees constitute refuges for these nest predators. However, predation level by snakes seems to be higher near oasis edges, where the environment is more open and sunny, facilitating the activity of reptiles. |
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