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Acanthidops bairdi

Peg-billed Finch

  • Order: Passeriformes
  • Family: Thraupidae


Acanthidops bairdi

Cerro de la Muerte, San José, Costa Rica; 19 February 2008 © Tuomas Seimola/

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.

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Recommended Citation

. 2010. Peg-billed Finch (Acanthidops bairdi), Neotropical Birds Online (T. S. Schulenberg, Editor). Ithaca: Cornell Lab of Ornithology; retrieved from Neotropical Birds Online:

This map is based on the maps available from the NatureServe InfoNatura website. The data for these maps are provided by NatureServe in collaboration with Robert Ridgely, James Zook, The Nature Conservancy - Migratory Bird Program, Conservation International - CABS, World Wildlife Fund - US, and Environment Canada - WILDSPACE.

  • Migration/Movement:Resident (nonmigratory)
  • Primary Habitat:Montane evergreen forest
  • Foraging Strata:Understory
  • Foraging Behavior:Probe
  • Diet:
  • Sociality:
  • Mating System:
  • Nest Form:
  • Clutch: -
  • IUCN Status:Least Concern