Attributes / relations provided by
♦ ¹del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
♦ ²FEEDING ECOLOGY AND STATUS OF THE VARIABLE SUNBIRD (Cinnyris venusta) IN THE ARBORETUM OF RUHANDE, Marie Jeanne UWIHOREYE, Bachelor’s Memoir, NATIONAL UNIVERSITY OF RWANDA, 2011