Isla Puná, Ecuador.
Until recently considered conspecific with C. cinereus and C. bogotensis, but differs from latter in characters given under that species. Differs from former in its whitish vs smoky-grey (or white-tinged smoky-grey) throat (2); more extensively whitish lower breast to belly (2); song with much narrower frequency range (score at least 2) with a longer pause between notes (score at least 2)#R. Monotypic.
W Ecuador (C Manabí to W Loja) and W & C Peru (Tumbes S to Ica and Marañón Valley).
Food and feeding
Status and conservation
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