Rufous-sided Scrub Tyrant

The rufous-sided scrub tyrant is 9.0 to 11.5 cm (3.5 to 4.5 in) long and weighs about 6 g (0.21 oz). The sexes have the same plumage. Adults have a brown crown with a small cinnamon-rufous central patch that is somewhat hidden. They have a whitish supercilium and eye-ring on an otherwise light brown face. Their upperparts are brown. Their wings are a darker brown than the upperparts with ocraceous tips on the coverts that show as two wing bars; the inner flight feathers have thin ochraceous edges. Their tail is dusky with ochraceous edges on the feathers. Voice: The rufous-sided scrub tyrant's principle vocalization is a "sustained, toneless, fast, dry rattling 'pe-tit-rrut- -' or 'tit-tit-=tit-rrrut' ('tit-tit' staccato)". It also makes buzzy trilled alarm calls and a "higher, more squeaky rattling chatter; or a screeching, strained clee-clee, also in longer series".