Black-billed Nightingale-Thrush (Catharus gracilirostris)
Salvin, 1865. 2 subspecies recognized, here is shown the nominal one.
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Juvenile Endemic to Costa Rica and Panama. Unique Catharus with black bill. Brown upperparts, grey face and forehead, pale throat. Paler underparts, with greenish breast area. Juveniles have spotted breast, while in adults it is clean greenish brown.
