The Peg-billed Finch is an unusual bird with an unusual name. The bill shape is rather odd, being slightly upturned and suggesting a flowerpiercer (Diglossa spp.). The bill is also strongly bicolored, black above and yellow-orange on the mandible, further accentuating its peculiar shape. Male Peg-billed Finches are all gray, while the female is more olive-brown above, paler below and showing striking cinnamon wingbars. This tanager-finch (it is in the tanager group) is found in moist thickets, mainly those with ample coverage of bamboo. It forages for nectar in flowers, and gleans insects, as well as taking seeds. It is particularly fond of bamboo seeds, but these only occur sporadically during mass flowering of bamboo. The Peg-billed Finch is largely restricted to highlands of Costa Rica, although it is also found in adjacent westernmost Panama.