1. A Field Guide to the Birds of The Gambia and Senegal;Barlow,1997
2. Further notes on the birds of southern Cameroon;Bates;Ibis,1911
3. Successes and failures of parent–offspring recognition in animals;Beecher,1991
4. Rapid decline of host defences in response to reduced cuckoo parasitism: behavioural flexibility of reed warblers in a changing world;Brooke;Proceedings of the Royal Society of London, Series B,1998
5. The breeding of the didric cuckoo Chrysococcyx caprius in Zambia;Colebrook-Robjent,1984