Common Cuckoo chick ejects eggs of Reed Warbler out of the Attenborough’s opinion

This is a clip from “RHYTHMS OF NATURE IN THE BARYCZ VALLEY“ movie. This film tells the story about nature in the Barycz River valley and enormous ...Фильм о паразитизме кукушек (увы и ах - на английском - но всё и так понятно)