The Little Ground-tyrant (Muscisaxicola fluviatilis) is a species of bird in the Tyrannidae family, the tyrant flycatchers. It is found in Amazonian Brazil, Peru, and Bolivia; also smaller regions of Colombia and Ecuador. Its natural habitats are subtropical or tropical moist shrubland and rivers.

Distribution

Amazon Basin, southwest

The Little Ground-tyrant is found in the southwest Amazon Basin at higher elevations in the Basins river headwaters. The largest area of range is in the east extending into central and northwest Bolivia, and east of the Madeira River; this entire south Amazon Basin"?Bolivian region is much of the headwater tributaries to the Madeira.

From central Bolivia, the range extends north through Amazonian Peru, (only crossing the southwest border areas of Brazil's Amazonas state), and extends downstream on the Marañón River and Amazon River down a riverine wildlife corridor approaching the Jurua River confluence.

Disjunct range locales occur in Ecuador; the species has a restricted-range for the south border region of Colombia along the north shore of the Marañón River, about 150 km.