It is found in Colombia, Costa Rica, Ecuador, Nicaragua, and Panama.

[3] These foraging territories are often on the borders of forests in areas of scattered flowers.

[4] The males will form leks to try to gain the attention of females during breeding season.

A molecular phylogenetic study published in 2014 found that Amazilia was polyphyletic.

[5] In the revised classification to create monophyletic genera, the blue-chested hummingbird was moved to the resurrected genus Polyerata.