1. The development of adult responses from responses given during imprinting by the domestic chick;Andrew;Anim. Behav.,1964
2. The regulation of numbers of tropical oceanic birds;Ashmole;Ibis,1963
3. First to sixth ringing reports;Ashton;Ostrich,1950
4. “The Birds of Tropical West Africa”;Bannerman,1949
5. Busnel, R. G. and Gramet, P. (1956). Recherches préliminaires sur le comportement acoustique de Quelea quelea quelea Latham en captivité. Bull. Inst. fr. Afr. noire 18 Ser. A. No. 1, 280–325.