Cocoa Woodcreeper

Xiphorhynchus susurrans

eBird gives this description for the Cocoa Woodcreeper:  Warm brown bird with buffy streaks on head and breast; hitches up tree trunks. Generally longer tailed and longer billed than a woodpecker. Very similar to many other species of woodcreepers. Focus on bill: long, fairly thick, and almost straight; generally pale grayish with fleshy tones, but darker on top edge. Listen for song, a long series of clear whistled notes fading slightly at the end. Found in wooded habitats, often in more open forest, edge, or second growth.

The Birds of the World website introduces the Cocoa Woodcreeper with this descriptive information:  The Cocoa Woodcreeper is a medium-sized woodcreeper. It occurs in lowland forests, often at forest edge and in second growth, in southern Central America and in northwestern South America, and is common within most of these regions. It is very similar to (and formerly was considered to be conspecific with) the Buff-throated Woodcreeper (Xiphorhynchus guttatus) of central and eastern South America; the taxonomy of these two species perhaps is not yet fully resolved, since some subspecies of Cocoa Woodcreeper are more similar to Buff-throated Woodcreeper than they are to other subspecies of the Cocoa.

I met my first  Cocoa Woodcreeper while walking a trail at Carara National  Park on the morning of February 10, 2023.  My look  at this active bird was brief, as it darted up the trunk of a tree.