Bogaba, Chiriquí, Panama.
Formerly placed in genus Acanthylis. For most of 20th century treated as a subspecies of C. spinicaudus, but morphological analysis#R indicates considerable size discrepancy between present species and C. s. aetherodroma of E Panama (effect size for published wing data 3.29), as well as darker ventral plumage and broader pale rump extending to tail-coverts. Monotypic.
SW Costa Rica E to W Panama (Chiriquí).
Food and feeding
Status and conservation
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