Perija Antpitta

Grallaria antpittas are a "wonderful group of plump and round antbirds whose feathers are often fluffed up...they have stout bills very short tails". The Perija antpitta is about 14 to 15 cm (5.5 to 5.9 in) long. The sexes have the same plumage. Adults have buff brown to olive brown upperparts with whitish bases on the forecrown feathers. They have deep olive buff lores, a thin and indistinct whitish eyering, and brownish ear coverts. Their wings are mostly buff brown to olive brown with gray brown to brownish olive outer edges on the flight feathers. Their tail is buffy gray brown. Voice: The Perija antpitta's long song is a "descending series of 10–20 notes uttered at an average pace of about 5 notes/s and with a frequency drop from start to end of about 500 Hz. Notes are typically pure and overslurred, and they reach a maximum frequency at the start of about 3.5k Hz. The pace accelerates towards the end." Its short song is a "flat-pitched trill, lasting 0.4‒0.