The Chocó Vireo is apparently restricted to a narrow belt of premontane pluvial forests from 1200-1600 m on the Pacific slope of the W Andes.

A photo of this species can be found on Carl Downing's website.

Chocó Vireo     Vireo masteri
w Colombia: Chocó region
insert after: Vireo flavoviridis
Paul G.W. Salaman & F. Gary Stiles,
A distinctive new species of vireo (Passeriformes, Vireonidae) from the Western Andes of Colombia/Chocó region of western Colombia
Ibis 138, 4 (1996): 610-619