The Blue-headed sapphire or Gray's hummingbird (Chrysuronia grayi) is a species of hummingbird in the emerald's tribe Trochilini of subfamily Trochilidae. It is found in Colombia and Ecuador.[5][4]
^Remsen, J. V., Jr., J. I. Areta, E. Bonaccorso, S. Claramunt, A. Jaramillo, D. F. Lane, J. F. Pacheco, M. B. Robbins, F. G. Stiles, and K. J. Zimmer. Version 24 July 2022. A classification of the bird species of South America. American Ornithological Society. https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm retrieved July 24, 2022