Streak-fronted Thornbird

The streak-fronted thornbird (Phacellodomus striaticeps) is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae. It is found in Argentina, Bolivia, and Peru. == Taxonomy and systematics == The streak-fronted thornbird has two subspecies, the nominate P. s. striaticeps (d'Orbigny & Lafresnaye, 1838) and P. s. griseipectus (Chapman, 1919). However, some authors consider the second to be a tentative rather than confirmed separate taxon, and note that some other populations differ more from the nominate than it does. == Description == The streak-fronted thornbird is 16 to 17 cm (6.3 to 6.7 in) long and weighs about 23 to 29 g (0.81 to 1.0 oz). It is a rather small and slim thornbird. The sexes have the same plumage. Adults of the nominate subspecies have an indistinct gray-buff supercilium, blackish lores with some gray-buff, and a dark brown stripe behind the eye on an otherwise rufous-washed brownish face. Their forehead ("front") is a mix of blackish and reddish with brown streaks. Their crown is paler, browner, and unstreaked. Their upperparts are mostly rich dark brown with a slightly paler rump. Their wings are mostly dark brown with some rufescence, fuscous brown primary coverts, and flight feathers…