Andes of southern Ecuador; doubtfully northern Peru.
 
Population
Estimated population is unknown (2011).
Subspecies
Forms a superspecies with Amazilia Hummingbird (Amazilia amazilia), of which formerly considered a subspecies but differs in coloration, song repertoire and habitat requirements, and probably parapatric with dumerilii of Amazilia Hummingbird (Amazilia amazilia) in Casanga Valley (central Loja), where no interbreeding yet observed.
Considered by some authors to be a subspecies of Amazilia Hummingbird (Amazilia amazilia).