Strong-billed Woodcreeper is one of the largest, heaviest woodcreepers. The upperparts are primarily brown with rufous wings and tail; the underparts are tawny brown; and the head, throat, and belly are streaked with buff. Like other species of Xiphocolaptes, it has a large, stout, gently curved bill. Strong-billed Woodcreeper is by far the most geographically widespread of the four species of Xiphocolaptes. It ranges from southwestern Mexico across much of Middle America to southern Panama, thence throughout the tropical Andes and related ranges, from northern Venezuela to central Bolivia, as well as across much of Amazonia, especially south of the Amazon River itself. A remarkable 25 subspecies have been described from across this enormous range (one of the largest of any Dendrocolaptidae), of which some are perhaps deserving of separate species status; three subspecies groups are generally recognized, in Middle America, western and northern South America, and the Amazonian lowlands, respectively. Strong-billed Woodcreeper is listed as Least Concern by the IUCN, with an estimated population between 50,000 and 499,999 mature individuals (BirdLife International 2011).