Newton's sunbird, or the São Tomé sunbird (''Anabathmis newtonii'') is a species of bird in the family

Nectariniidae Sunbirds and spiderhunters make up the family Nectariniidae of passerine birds. They are small, slender passerines from the Old World, usually with downward-curved bills. Many are brightly coloured, often with iridescent feathers, particularly i ...

. It is

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

São Tomé Island São Tomé Island, at , is the largest island of São Tomé and Príncipe and is home in May 2018 to about 193,380 or 96% of the nation's population. The island is divided into six districts of São Tomé and Príncipe, districts. It is located ...

. It is one of the smallest sunbirds. In general, the bird has dark olive upperparts - the male has an iridescent green-purple throat and upper breast region, while females have a dull olive throat and yellowish underparts, but underparts in female youth do not develop into yellow until later sexual maturity.

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* * Newton's sunbird Endemic birds of São Tomé and Príncipe Endemic fauna of São Tomé Island Newton's sunbird Taxonomy articles created by Polbot {{Nectariniidae-stub