Do birds nest in other birds' nests?

Answer:
Yes - the commonest 'culprit' is the Cuckoo - it lays its eggs in the nests of other birds - leaving the hapless 'parents' to raise their young !
First answer by Snakester1962. Last edit by Snakester1962. Contributor trust: 249 [recommend contributor recommended]. Question popularity: 1 [recommend question].