White-bellied Pygmy Tyrant

The white-bellied pygmy tyrant is about 7 cm (2.8 in) long and weighs about 5 to 6 g (0.18 to 0.21 oz). It is a very small, large-headed bird. The sexes have the same plumage. Adults have a buff whitish area surrounding the eye with a grayish crescent behind the ear coverts. Their crown is bright olive with a brown tinge and their back and rump are bright olive. Their wings are dusky with bright olive-yellow edges on the flight feathers and tips of the coverts; the latter show as two indistinct wing bars. Their tail is dusky. Voice: The white-bellied pygmy tyrant is "asily overlooked except by voice". Its song is "a mellow, tinkling, rising-falling trill: triiiiieww, sometimes becoming longer, with last few notes stuttered trriiiEEEEiii'rr'rrl". Its calls are "a quiet trrt or trrrrl and a more slowly trilled tree ee'ee'ew".