Black-chested Sparrow

The black-chested sparrow is 15 to 15.5 cm (5.9 to 6.1 in) long and weighs about 18 to 28 g (0.63 to 0.99 oz). The sexes have the same plumage. Adults have a mostly blackish head with a white spot on the lores and a white "moustache". The black of their head extends under their white throat to form a band across the chest. Their scapulars and back are rufous with darker brown mottling and their rump and uppertail coverts are olive-brown. Their tail is blackish brown with paler brown feather edges. Voice: Pairs of black-chested sparrows sometimes sing in duet. Their song is "a high liquid twittering preceded by one to a few short introductory notes, bzz, bzz, bzz, t-chip ichip tip-i-see". It also has a "chatter-song" and a soft "whisper song". Its calls are "pit-za", a "chip followed by a trill", and a "thin tzeet".