| Titre : | Second clutches in the Alpine Swift Apus melba |
| Auteurs : | A. Antonov, Auteur ; D. Atanasova, Auteur |
| Type de document : | Article |
| Dans : | Ardea (89(3) 2001) |
| Article en page(s) : | 543-544 |
| Résumé : | During a 2-year study in Sofia, Bulgaria, second clutches were recorded in Alpine Swift Apus melba, a species stated to raise only one brood per year. Each of the second clutches was laid after a successful first breeding attempt, in one case proved by marked birds. The frequency of second clutches was low - in each of the two years only two out of 35 pairs. |



