FOR long I wondered how the Cuckoo (Cuculus c. canorus) placed her feet when she was " sitting on a nest " and laying her egg, so I determined to try filming one when she was victimising Reed-Warbiers (Acrocephalus s, scirpaceus) close to New Romney, Kent, in 1938. For several reasons I failed to see her laying an egg, so again tried in 1939 for seven weeks, with the help of a farm hand, Charles Fli...

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