The streaked xenops (Xenops rutilans) is a passerine bird in the Furnariinae subfamily of the ovenbird family Furnariidae. It is found in the New World from Costa Rica and Trinidad south to Bolivia and Argentina.
Taxonomy and systematics
Early on, the streaked xenops was assigned the binomial Xenops rutilus. In the mid-1900s 1900s taxonomists began using X. rutilans. By the principle of priority, the earlier rutilus is correct, but because of the long usage of rutilans, most systems have stayed with that specific epithet. A major exception is BirdLife International's Handbook of the Birds of the World (HBW), which uses X. rutilus.
The other 10 subspecies of the streaked xenops differ in varying degrees from the nominate, though much of the differences fall within the variability of the nominate's plumage. The differences tend to be in the intensity of the rufous of the upperparts, the size and exact color of the underparts' streaks, and the exact base color of the underparts.
Behavior
Movement
The streaked xenops is a year-round resident throughout its range.