The river tyrannulet (Serpophaga hypoleuca ) is a species of bird in the family Tyrannidae, the tyrant flycatchers.It is found in Peru, Venezuela and Brazil; also river extensions into Ecuador, Colombia-(border) and Bolivia.
Its range consists of several Amazon Basin river-corridors and the Orinoco River drainage river corridors, and extending into neighbor countries, or a country-river border. Its natural habitat is subtropical or tropical moist shrubland located along these corridors.
