Willis's Antbird Cercomacroides laeta

Small, perky antbird. Males are slate-gray with an often-concealed white patch on their backs and narrow white tail tips (lacking in the western subspecies). Females have an olive-gray back and are tawny-buff below. Found at the forest edge and in second growth, where it forages in pairs in the understory and is not normally associated with mixed-species flocks or army-ant swarms. The similar Dusky Antbird has a white tipped tail in the area of overlap with the western subspecies. The song is easy to recognize, a sharp, high, positively joyful “puh-wéedi-wéedi-wéedi-wéedi.”