Nick Davies, Professor of Behavioural Ecology in the Department of Zoology, appeared on the BBC programme 'Springwatch', on Thursday 11 June 2015.  He and Chris Packham discussed cuckoos in a report filmed at Wicken Fen.

This is a link to the programme; the report is about 20 minutes in.

http://www.bbc.co.uk/iplayer/episode/b05yxbvl/springwatch-2015-episode-12