Written by: Adam Parr Black-cheeked Ant-Tanagers (Habia atrimaxillaris) may not be most glamorous bird on the Osa Peninsula. They lack the striking colors of a Scarlet Macaw, or Fiery-billed Araçari, and are mostly dull black, with just a splash of salmon in the throat and breast. Their vocalizations won’t send a chill down your spine like the eerie pan flute-like songs of a Common Potoo, and consist instead of a slurred two or three note whistle of a song. However, these superficially lackluster attributes belie a truly fascinating species, and...