Buff-bellied Hummingbird (Amazilia yucatanensis) [XC302265]
by Michael Lester from Castellow Hammock Park, Miami-Dade County, Florida, United States (flight call, song)
Buff-bellied Hummingbird (Amazilia yucatanensis) [XC265390]
by Dan Lane from Ixhuatlan del Sureste, Veracruz, Mexico (call, blade plane in the background)
Subspecies
Forms a superspecies with Cinnamon Hummingbird (Amazilia rutila), but not, as sometimes suggested, with Rufous-tailed Hummingbird (Amazilia tzacatl) and Loja Hummingbird (Amazilia alticola). Subspecies cerviniventris formerly treated as a distinct species, including subspecies chalconota.
The following 3 subspecies are recognised:
chalconota Oberholser, 1898 - Extreme southern USA (Texas) to north-eastern Mexico (south to San Luis Potosí).