Many-colored Rush Tyrant

The many-colored rush tyrant is "the most colourful of all tyrannids". It is 10.5 to 11.5 cm (4.1 to 4.5 in) long and weighs 6.5 to 8 g (0.23 to 0.28 oz). Adult males of the nominate subspecies T. r. rubrigastra have a black crown with a slight crest and a partly hidden red patch in the middle. They have a large golden supercilium and glossy blue to black lores whose color extends onto the ear coverts giving a masked appearance. Their nape is ochraceous that blends into their bright moss-green back and rump. Voice: The many-colored rush tyrant's song is "a quiet, mellow, pleasant series of noes with a short buzz near the start and ending with a loose musical rattle: kachup-brrr-kachup'yp'a'trrrrl. Its calls are "a loud keeYIP or kaCHOO and a quiet, popping pip.