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Woodcreepers (Dendrocolaptidae)

Brown-billed Scythebill (Campylorhamphus pusillus) - HBW 8, p. 447

French: Grimpar à bec brun German: Brauner Sensenschnabel Spanish: Picoguadaña Andino

Taxonomy: Xiphorhynchus pusillus P. L. Sclater, 1860, in Nova Grenada int. = “Bogotá”.
Central American races considered by some authors to represent a separate species “C. borealis”. Assessment of patterns of geographical variation complicated by individual variation in general coloration and in extent of streaking. Races borealis and olivaceus poorly differentiated from one another; variation upon which tachirensis and guapiensis based possibly individual rather than geographical. Five subspecies recognized.

Subspecies and Distribution:

  • borealis Carriker, 1910 - Costa Rica (Caribbean slope, also in SW on Pacific slope and adjacent lowlands) and W Panama (W Chiriquí, W Bocas del Toro).
  • olivaceus Griscom, 1927 - C & E Panama (Veraguas E to E Darién).
  • tachirensis Phelps, Sr. & Phelps, Jr., 1956 - Perijá Mts and extreme E Andes in NE Colombia and NW Venezuela (W Zulia, SW Táchira).

     See all 5 subspecies
  • borealis Carriker, 1910 - Costa Rica (Caribbean slope, also in SW on Pacific slope and adjacent lowlands) and W Panama (W Chiriquí, W Bocas del Toro).
  • olivaceus Griscom, 1927 - C & E Panama (Veraguas E to E Darién).
  • tachirensis Phelps, Sr. & Phelps, Jr., 1956 - Perijá Mts and extreme E Andes in NE Colombia and NW Venezuela (W Zulia, SW Táchira).
  • pusillus (P. L. Sclater, 1860) - N & C Andes on both slopes in Colombia (except extreme NE) and Ecuador, and on E slope in N Peru (S to Cajamarca and San Martín).
  • guapiensis Romero-Zambrano, 1980 - coastal lowlands of SW Colombia (Cauca).
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