Northern Yellow White-eye

The northern yellow white-eye (Zosterops senegalensis), formerly the African yellow white-eye, is a species of bird in the family Zosteropidae. It is found across sub-Saharan Africa, from Senegal in the west across to southern Sudan in the east and south to northern Angola. It was formerly considered to be conspecific with the Angola white-eye. == Taxonomy == The northern yellow white-eye formerly included additional subspecies. These were split to create the southern yellow white-eye and the green white-eye based partly on the results of a molecular phylogenic study in 2013. Four subspecies are recognised: Z. s. senegalensis Bonaparte, 1850 – Mauritania and Senegal to northwest Ethiopia Z. s. jacksoni Neumann, 1899 – west Kenya and north Tanzania Z. s. demeryi Büttikofer, 1890 – Sierra Leone, Liberia and Ivory Coast Z. s. gerhardi Elzen & König, C, 1983 – south Sudan and northeast Uganda == Description == A small yellow bird with a prominent white eye ring surrounding a dark eye. The underparts and head are yellow, with a black loral stripe, black bill, the flight and tail feathers are brown edged with yellowish olive. Some subspecies are greener, especially those occurring in forest. Juveniles are darker. This bird measures 11·5…