Large antpitta of the temperate zone in the Andes from Venezuela to Bolivia. Typical antpitta shape: plump with short tail and long legs. Size alone helps separate from most other antpittas, as does boldly scalloped underparts. Often occurs at higher elevations than other antpittas of similar size such as Giant and Great, but plenty of overlap; note Undulated’s slaty gray (not brown) back and dark mustache stripe. Like most antpittas, very difficult to see; occasionally hops along a forest trail, especially in the morning and evening. Listen for its fast, hollow-sounding triling song.