Unicolored Thrush Turdus haplochrous

Drab thrush endemic to floodplain forest of the Río Mamoré and tributaries surrounded by the flooded Moxos grasslands in El Beni, central Bolivia. From similar Hauxwell’s and Black-billed Thrushes by dull olive bill, exposed yellowish orbital skin, and relatively plain throat. Difficult to see, mainly because most of its habitat is tough to access. Song low, full whistles, 5-6 notes with little variation. Calls short full notes, or longer nasal calls.