This tiny kingfisher is sparse, though perhaps often overlooked, throughout its large range in tropical lowlands. They are found along quiet streams in forest interior, as well as flooded várzea and swampy edges of lakes. They perch low, and generally stay concealed. Their flight is fast and buzzy. Overall, this species is unique in its minute size, but also note the buffy collar, rufous breast and flanks with white belly, and solid green back. Their most frequently-heard vocalization consists of quiet ticking notes, though they also give a more song-like series of high, rapid notes. Like other kingfishers, their nest is a burrow in an exposed bank.