Yellow-browed Tyrant

The yellow-browed tyrant is 15 to 16.5 cm (5.9 to 6.5 in) long and weighs about 20 g (0.71 oz). Adult males have a mostly dark grayish olive face with a bold bright yellow supercilium. Their upperparts are dark olive. Their wings are dusky black with grayish white edges on the flight feathers and grayish white tips on the coverts that show as two wing bars. Their tail is dusky with white outer webs on the outer feathers. Their underparts are bright yellow with an olive wash on the sides of the breast. Adult females are overall paler than males, especially their supercilium and throat. Voice: The yellow-browed tyrant is not highly vocal. Its song is a "short, fat, nervous, ascending series of 4-5 wuh-wuh-weh-weéteet notes". It also makes a "very mild but sharp whee very low double cheep".