Black jacobin

The black jacobin (Florisuga fusca), previously placed in the monotypic Melanotrochilus, is a species of hummingbird in the family Trochilidae. It is found in or near the Atlantic Forest of eastern Brazil, Uruguay, eastern Paraguay, and far north-eastern Argentina. It is generally common, and therefore considered to be of least concern by BirdLife International and consequently the IUCN. Adults of both sexes are overall black with green-tinged back and wing-coverts, and white lower flanks and outer rectrices. The white in the tail is often flashed conspicuously in flight. The commonly seen immatures, sometimes incorrectly referred to as "females", have a distinctive rufous patch in the malar region.