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Article
A. Antonov, Auteur ; D. Atanasova, AuteurIn 1999-2000 we investigated chick condition of first and second broods in the Pallid Swift Apus pallidus in Sofia city, Bulgaria. Data on nine variables characterising chick conditions were collected from post-hatching day 15 to fledging. First[...]
Article
A. Antonov, Auteur ; D. Atanasova, AuteurDans Ardea (89(3) 2001)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 pr[...]
Article
A. Antonov, Auteur ; D. Atanasova, AuteurThis study tested if urbanisation had small-scale effects on Magpie reproductive biology. It was carried out in 1999-2000 in Sofia, Bulgaria, where one of the highest Magpie population densities known is found. Breeding parameters were compared [...]
