Pygmy sunbird

The pygmy sunbird (Hedydipna platura) is a species of bird in the family Nectariniidae. It is found in Benin, Burkina Faso, Cameroon, Central African Republic, Chad, Democratic Republic of the Congo, Ivory Coast, Ethiopia, Gambia, Ghana, Guinea, Guinea-Bissau, Kenya, Mali, Mauritania, Niger, Nigeria, Senegal, Sierra Leone, Sudan, Togo, and Uganda.

Description
Male birds have green back, yellow belly, and an extremely long central tail feather, while females have gray-brown upperparts and dim-yellow underparts.