Cheke, Robert ORCID: https://orcid.org/0000-0002-7437-1934 and Barlow, Clive R. (2024) Occurrence of fully grown Western violet-backed sunbirds Anthreptes longuemarei with pink bills. Malimbus: Journal of West African Ornithology, 46 (1). pp. 46-48. ISSN 0331-3689

Cheke, Robert A. ORCID: https://orcid.org/0000-0002-7437-1934, Barlow, Clive R. and Mann, Clive F. (2019) Nesting by dark-bibbed female Beautiful Long-tailed Sunbirds Cinnyris pulchellus and occurrence of dark both sexes of Beautiful Long-tailed and Gorgeous Sunbirds C. melanogastrus. Bulletin of the British Ornithologists' Club, 139 (4). pp. 328-332. ISSN 0007-1595 (Print), 2513-9894 (Online) (doi:10.25226/bboc.v139i4.2019.a5)