River tyrannulet

River tyrannulet
At Iranduba on the Solimões River, Amazonas state, Brazil
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Tyrannidae
Genus: Serpophaga
Species:
S. hypoleuca
Binomial name
Serpophaga hypoleuca

The river tyrannulet (Serpophaga hypoleuca) is a species of bird in the family Tyrannidae, the tyrant flycatchers. It is found in Bolivia, Brazil, Colombia, Ecuador, Peru, and Venezuela.