About predation of the Rook on House Martins. - I.R. Merzlikin. - Berkut. 9 (1-2). 2000. P. 11.
In the city of Sumy (NE Ukraine) the attack of a Rook on a nest from colony of Martins was observed. The Rook took out one nestling and flew away. The nest has fallen. [Russian].