Description wikipedia

The Antillean palm swift (Tachornis phoenicobia) is a species of bird in subfamily Apodinae of the swift family Apodidae. It is found on the Caribbean islands of Cuba, Jamaica, and Hispaniola (shared by the Dominican Republic and Haiti). == Taxonomy and systematics == The Antillean palm swift has two subspecies: the nominate T. p. phoenicobia Gosse, 1847, and T. p. iradii (Lembeye, 1850). == Description == The Antillean palm swift is 9 to 11 cm (3.5 to 4.3 in) long and weighs about 9 to 11 g (0.32 to 0.39 oz). It has long narrow wings and a medium length forked tail. The sexes are alike. Adults of the nominate subspecies have a dark sooty brown crown and nape. Their back, a narrow center strip of the rump, uppertail coverts, and tail are sooty black to black. The sides of their rump are white. Their wings are sooty blackish with pale edges on the flight feathers. Most of their face is grayish brown. Their underparts are mostly dull white; their flanks, a narrow band across the breast, and undertail coverts are dark sooty brown. Immatures are similar to adults, but their underparts are an even duller white, and the flanks and undertail coverts a paler sooty brown. The subspecies T. p. iradii is somewhat larger than the nominate, and has a more deeply forked tail. Its back is more sooty than black, its face has more extensive grayish brown, and its flanks are a paler sooty brown.