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Woodcreepers (Dendrocolaptidae)

Curve-billed Scythebill (Campylorhamphus procurvoides) - HBW 8, p. 445

French: Grimpar à courbe German: Dunkler Sensenschnabel Spanish: Picoguadaña Amazónico

Taxonomy: Xiphorhynchus procurvoides Lafresnaye, 1850, “Cayenne”.
Suggested as sister-species of C. trochilirostris, with relationships among some taxa in group unclear. Races form two groups, differing both vocally and morphologically: N “procurvoides group” (including poorly differentiated sanus) and S “multostriatus group” (with probatus and similar successor). Birds from SE Amazonia (multostriatus) are morphologically intermediate between C. trochilirostris and nominate of present species, and members of entire “multostriatus group” are vocally more similar to C. trochilirost.. View all taxonomy...

Taxonomy: Xiphorhynchus procurvoides Lafresnaye, 1850, “Cayenne”.
Suggested as sister-species of C. trochilirostris, with relationships among some taxa in group unclear. Races form two groups, differing both vocally and morphologically: N “procurvoides group” (including poorly differentiated sanus) and S “multostriatus group” (with probatus and similar successor). Birds from SE Amazonia (multostriatus) are morphologically intermediate between C. trochilirostris and nominate of present species, and members of entire “multostriatus group” are vocally more similar to C. trochilirostris. Assessment of geographic variation complicated by marked individual variation in overall coloration, and extent and width of streaking on both back and underparts. Specimens from islands in lower Amazon R (near Obidos, Brazil) have been attributed to successor, but this is unlikely on grounds of both ecology and biogeography. Five subspecies recognized.

Subspecies and Distribution:

  • sanus J. T. Zimmer, 1934 - NW Amazonia, from SE Colombia (W Meta, W Caquetá), NE Ecuador (Sucumbios) and extreme NE Peru E to extreme NW Brazil (upper R Negro), S & E Venezuela (S Amazonas, NE Bolívar; sight record from Monagas) and N Guyana.
  • procurvoides (Lafresnaye, 1850) - NE Amazonia, in Surinam, French Guiana and Brazil N of Amazon (lower R Negro E to Amapá).
  • successor Todd, 1948 - SW Amazonia, S of Amazon in W Brazil from N Acre E to R Madeira; also reported from river islands in lower Amazon R in Pará (near Obidos).

     See all 5 subspecies
  • sanus J. T. Zimmer, 1934 - NW Amazonia, from SE Colombia (W Meta, W Caquetá), NE Ecuador (Sucumbios) and extreme NE Peru E to extreme NW Brazil (upper R Negro), S & E Venezuela (S Amazonas, NE Bolívar; sight record from Monagas) and N Guyana.
  • procurvoides (Lafresnaye, 1850) - NE Amazonia, in Surinam, French Guiana and Brazil N of Amazon (lower R Negro E to Amapá).
  • successor Todd, 1948 - SW Amazonia, S of Amazon in W Brazil from N Acre E to R Madeira; also reported from river islands in lower Amazon R in Pará (near Obidos).
  • probatus J. T. Zimmer, 1934 - SC Amazonian Brazil, S of Amazon, between R Madeira and R Tapajós, S to C Rondônia and NW Mato Grosso.
  • multostriatus (Snethlage, 1907) - SE Amazonian Brazil, S of Amazon, from R Tapajós E to R Tocantins, S to NE Mato Grosso.

Sounds

2 recordings
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