This video says about itself:
Common Cuckoo chick ejects eggs of Reed Warbler out of the nest. David Attenborough‘s opinion.
4 June 2013
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 Milicz ponds. This area is located in the south-western part of Poland (in the middle of Europe). I and my wife made it for 2 years.
Sir David Attenborough, a world-famous BBC nature documentary film maker, after watching the film “Rhythms of Nature in the Barycz Valley” wrote:
“I have viewed Rhythms of Nature with great pleasure.
A lovely place, beautifully filmed”.
For the first time ever worldwide, there is now a life webcam of an Eurasian reed warbler nest in which a female cuckoo had laid an egg.
At that reed warbler nest webcam in the Netherlands, on 5 June 2017 the young cuckoo hatched. A few hours later, the other (reed warbler) egg hatched.
Because it is now bad weather in the Netherlands, the reed warbler parents often stay on the nest; meaning the cuckoo baby has now no chance of expelling the reed warbler baby from the nest.