Interior of southern Mexico, from central Guerrero and southern Puebla south-east to eastern Oaxaca. Also reported from Distrito Federal, Morelos and Chiapas, but identity of specimens doubtful.
 
Population
Estimated population is 20,000 - 49,999 (2010).
Beautiful Sheartail (Calothorax pulcher) [XC410200]
by Andrew Spencer from Monte Alban, Oaxaca, Mexico (call)
Beautiful Sheartail (Calothorax pulcher) [XC301239]
by Dan Lane from Oaxaca, El Yagul Ruins, Mexico (call)
Subspecies
Genus sometimes merged into an expanded version of Calliphlox. Forms a superspecies with Lucifer Hummingbird (Calothorax lucifer). Closely related to Doricha, which is sometimes united with present genus on the basis of similar morphological characters.