Cuckoos and their victims: An evolutionary arms race is 2015's Croonian Lecture by Professor Nicholas Davies FRS, given at the Royal Society, London, on Thursday 14 May 2015, 6.30-7.30pm BST. Nick Davies' fascinating lecture reveals one of nature's most interesting stories based on his experience of cuckoo-watching. Watch and be amazed by the different guises in female cuckoos, beautiful forgeries of host-egg signatures, and manipulative begging by cuckoo chicks. To find out more about the event visit our website: royalsociety.org/events/2015/05/cuckoos-and-their-victims/