Ridiculous as it sounds, ‘rufous-rumped foliage-gleaner’ sums up this little bird perfectly. Like the other foliage-gleaners (of which there are over 30 species spanning across 6 genera), the rufous-rumped was named for its foraging behaviour which typically involves picking (gleaning) arthropods from plant material. There are several foliage-gleaners with equally glorious vernaculars, such as the henna-hooded and slaty-winged foliage-gleaners, but the rufous-rumped has a red bottom. So there.