Yungas Antwren

The Jungas antwren is 8.5 to 9.5 cm (3.3 to 3.7 in) long and weighs 8 to 10 g (0.28 to 0.35 oz). It is a smallish bird with a short tail. Adult males are almost entirely gray with slightly darker and more brownish gray wings and tail than body. Adult females have a brownish yellow face. Their upperparts are mostly olive-brown, with a grayish tinge from the crown to upper mantle and yellowish brown tips on the uppertail coverts. Their tail is dark brown with rufous-brown edges to the feathers. Voice: The Jungas antwren's song is "a series of simple, slightly downslurred notes on approximately same pitch (c. 4 kHz), delivered rapidly, notes much longer than intervals". Its calls "include sharp, upslurred 'wheep' and upslurred doubled-noted 'do-leep' ".