The Yellow-margined Flycatcher (Tolmomyias assimilis) is a species of bird in the Tyrannidae family. It is found in Bolivia, Brazil, Colombia, Costa Rica, Ecuador, French Guiana, Guyana, Nicaragua, Panama, Peru, Suriname, and Venezuela. Its natural habitat is subtropical or tropical moist lowland forests.
BirdLife International 2004. Tolmomyias assimilis. 2006 IUCN Red List of Threatened Species. Downloaded on 27 July 2007.