A large, spectacular hummingbird. Unmistakable in range: bronzy-red body with a black head, a green throat and rump, and a long tail with elongated central feathers. Very similar to Crimson Topaz, but apparently little to no range overlap. Occurs in lowland rainforest in the western Amazon basin, often around blackwater streams, where it perches for long periods and occasionally sallies out to catch insects. Can also be seen around flowering trees.