Northern Tropical Pewee

The northern tropical pewee is about 12 to 14 cm (4.7 to 5.5 in) long and weighs about 8 to 14 g (0.28 to 0.49 oz). The sexes have the same plumage. Adults of the nominate subspecies C. b. bogotensis have a dark blackish gray crown with a slight crest, white to grayish white lores, and a thin white eye-ring on an otherwise grayish olive face. Their back is sooty olive-gray and their rump and uppertail coverts brownish olive with a hidden white feather tuft on either side of the rump. Their wings are mostly dusky. Voice: The northern tropical pewee's dawn song is a "long series in which short whistles are delivered at a leisurely pace of about one whistle every 2‒3 seconds" and which apparently is the same across its range. Its calls include a "short, rather faint trill trree-re or trree-re-re...a short trilled seerip, tre'e'e'e or tir'r'r'ip...a trilled ti-i-i-i-il or tree-ee-ee-eet not very musical kyeer,r,r...