Bentbill

Oncostoma is a genus of birds in the Rhynchocyclidae family.

It contains the following species:
 * Pale-eyed Pygmy-Tyrant, Oncostoma pilaris
 * Snethlage's Tody-Tyrant, Oncostoma minor
 * Yungas Tody-Tyrant, Oncostoma spodiops
 * Helmeted Pygmy-Tyrant, Oncostoma galeatum
 * Double-banded Pygmy-Tyrant, Oncostoma vitiosum
 * Long-crested Pygmy-Tyrant, Oncostoma eulophotes
 * Scale-crested Pygmy-Tyrant, Oncostoma pileatum
 * Northern Bentbill, Oncostoma cinereigulare
 * Southern Bentbill, Oncostoma olivaceum