Streamer-tailed Tyrant

The streamer-tailed tyrant (Gubernetes yetapa) is a species of bird in the family Tyrannidae, the tyrant flycatchers. It is found in Argentina, Bolivia, Brazil, and Paraguay, and as a vagrant to Uruguay. == Taxonomy and systematics == The streamer-tailed tyrant was formally described in 1818 as Muscicapa yetapa, erroneously placing it in the Old World flycatcher family. It was later transferred to its present genus Gubernetes that was erected in 1825 by George Such, albeit within family "Laniadae" (later Laniidae, the shrikes). The streamer-tailed tyrant is the only member of genus Gubernetes and has no subspecies. == Description == The streamer-tailed tyrant's body is about 35 cm (14 in) long; including the tail the species is 42 cm (17 in) long. The sexes have the almost the same plumage; females are smaller and slightly duller than males and have shorter tails. Adults have a pale gray forecrown and supercilium, a darker gray crown, and a black line through the eye. Their upperparts are gray with dark brown shafts on the feathers. Their wings are mostly blackish with a large cinnamon patch at the base of the primaries that shows conspicuously in flight. The wing's tertials have light brown to sandy…