The Sulphur-rumped Flycatcher (Myiobius sulphureipygius) is a species of bird in the Tyrannidae family. It is found in Belize, Colombia, Costa Rica, Ecuador, Guatemala, Honduras, Mexico, Nicaragua, and Panama. Its natural habitat is subtropical or tropical moist lowland forests.
BirdLife International 2005. Myiobius sulphureipygius. 2006 IUCN Red List of Threatened Species. Downloaded on 26 July 2007.