The Cocoa WoodcreeperXiphorhynchus susurrans, is breeds in tropical Central and South America. The head and neck are buff-streaked dark brown, the upper back is liver-brown, and the rest of the upperparts, wings and tail are rufous. The bill is long, black, slightly decurved, and hooked at the tip. This woodcreeper is a common and widespread bird of forests and cultivated land with trees. It is an insectivore which feeds on ants and other insects and spiders. Groups of up to a dozen birds will follow columns of army ants.
This was photographed at Rancho Naturalista, Costa Rica.