Грачик, Р.; Федоренко, А.П.; Лоскот, В.М.; Чуприн, С.Л.
(Вестник зоологии, 1975)
In spring 1972 106 young birds of the town population of Turdus merula L. were grown in Poznan and delivered to Kiev by plane (about 1000 km). The birds were set free in the territory of the Zoo. Observations showed that ...