Last Updated: Friday, August 03, 2012, 18:55
Cuckoo birds use multiple disguise to lay their eggs in other birds` nests, to avoid raising their own chicks.
Last Updated: Friday, August 19, 2011, 18:37
Five cuckoos which left Britain in June have now reached Africa, making a journey of almost 5,000 kms in less than three months.
more videos >>