Differing from A. e. griseigularis Ridgway[1] of northwestern Colombia in much less grayish underparts (especially throat and chest), darker coloration of upper parts, and larger size.
Adults (sexes alike). — Forehead and crown, together with entire loral, orbital, superciliary, supra-auricular, and auricular regions and anterior half or more of malar region bright cinnamon-rufous, the supra-auricular region sometimes paler, forming a more or less distinct postocular streak; nape, hindneck, back, scapulars, rump, and upper tail-coverts plain olive-brown (between sepia and raw umber), the nape and hindneck sometimes duller; tail and wings cinnamon- rufous, this passing into brown on terminal portion of remiges and on tertials, the primary coverts tipped with more grayish brown; under- parts light olive or buffy olive, passing into dull whitish on upper throat and chin, inclining to raw umber on flanks, the abdomen sometimes tinged with tawny; under wing-coverts deep ochraceous- buff, the inner webs of remiges broadly edged with deep pinkish buff; maxilla blackish brown, mandible pale brownish (in dried skins) darker terminally; legs and feet horn color (in dried skins).
Young. — Pileum and hindneck olive-brown, nearly concolor with back, etc.; sides of head similar, relieved by a more dusky broad streak occupying upper portion of auricular region and a paler superciliary or supra-auricular streak, the latter sometimes rufous-tawny, the lower portion of auricular region, suborbital region, and malar region also sometimes rufous-tawny or suffused with that color; coloration otherwise essentially as in adults, but underparts tinged with ochraceous, or sometimes with indistinct narrow bars of dusky.
Adult male. — Length (skins), 140-153 (146); wing, 64-72 (66.8); tail, 66.5-75.5 (71.5); culmen, 12-14.5 (13.4); tarsus, 18-19.5 (18.6); middle toe, 13-14.5 (13.7).[2]
Adult female. — Length, (skins), 136-162 (146); wing, 62-69.5 (65.8); tail, 63-75 (70); culmen, 12.5-14 (13.4); tarsus, 18-19 (18.6); middle toe, 13-14.5 (13.6).[3]
- ↑ See p. 184.
- ↑ Nineteen specimens.
- ↑ Twelve specimens.
Locality. Wing. Tall. Culmen. Tarsus. Middle
toe.males. Ten adult males from Costa Rica 66.7 71.8 13.1 18.7 13.8 Nine adult males from western Panamá (Chiriquí) 66.8 71.5 13.4 18.6 13.7 One adult male (A. e. erythrops?) from northwestern Colombia 65.7 62.7 13.2 18 14 females. Eight adult females from Costa Rica 65.2 70.7 13.2 18.6 13.6 Four adult females from western Panamá (Chiriquí) 66.9 68.7 13.8 18.6 13.6
