whitish (sometimes intermixed with grayish) , the median interscapulars extensively white basally, forming a conspicuous patch when feathers are parted; rump buffy grayish, the upper tail-coverts darker, indistinctly margined with whitish; tail black, the rectrices tipped with white and edged for middle portion with same; wings black, the middle and greater coverts broadly tipped (mostly on outer webs) with white, the remiges edged (except on basal portion of distal secondaries and proximal primaries) with white; under parts plain buffy white, deepening into buff on chest and tawny-buff on malar region, the sides and flanks tinged with pale buffy grayish and, sometimes, very indistinctly streaked with darker; bill, etc., as in adult male; length (skins), 87-95 (90.5); wing, 48-52 (49.8); tail, 25.5-27 (25.7); tarsus, 14-15.5 (14.8); middle toe, 10.[1]
Young female. — Similar to the adult female but without any concealed white on interscapular region and under parts more deeply colored (buff deepening into tawny on chest and sides of head and neck).
Panamá (Verágua; Panamá; Lion Hill; San Pablo), through Colombia (Turbo; Remédios, Antioquía; Bogotá), Venezuela (Munduapo; Nicare; La Prición, Rio Caura; Rio Mato; Suapuré), to British Guiana (Demerara; Camacusa; Takutu R.; Carimang R.) and western Ecuadór (Esmeraldas; Chimbo; Gualaquiza; Gualea; Foreste del Rio Peripa; San Nicolas; San Javier; Pambilár; Intac),[2] Cayenne, and eastern Brazil.
- [Sitta] surinamensis Gmelin, Syst. Nat., i, pt. i, 1788, 444 (Surinam; based on Surinam Nuthatch Latham, Gen. Hist., iv, 72, pi. 62).
- Myrmotherula surinamensis Sclater, Proc. Zool. Soc. Lond., 1858, 234, pi. 141, fig.l (monogr.); Cat. Am. Birds, 1862, 179 (Cayenne ; Esmeraldas, w. Ecuador); Cat. Birds Brit. Mus., xv, 1890, 231, part. — Cassin, Proc. Ac. Nat. Sci. Phila., 1860, 190 (Turbo, Colombia). — Lawrence, Ann. Lyc. N. Y., vii, 1862, 293 (Lion Hill, Panamá). — Sclater and Salvin, Proc. Zool. Soc. Lond., 1864, 356 (Lion Hill); 1879, 525 (Remédios, Antioquía, Colombia; habits; descr. nest and eggs). — Salvin, Ibis, 1874, 311 (Turbo, Colombia; Panamá); 1885, 425 (Camacusa, British Guiana). — Berlepsch and Taczanowski, Proc. Zool. Soc. Lond., 1883, 564 (Chimbo, w. Ecuadór; crit.). — Salvin and Godman,
- ↑ Five specimens.
Locality. Wing. Tail. Culmen. Tarsus. Middle
toe.males. Three adult males from Panamá (line of railway) 50.5 26.3 15.3 17.3 10 One adult male from Turbo, n. w. Colombia 52.5 28.5 14 17 9.5 females. Three adult females from Panamá 49 26.2 15.2 17.5 10 One adult female from British Guiana 50 23 14 17.5 10 - ↑ I have seen specimens from Panamá, Colombia, and British Guiana only.
