Broad-billed Hummingbird (Cynanthus latirostris) [XC445920]
by Richard E. Webster from Alamos, Sonora, Mexico (call)
Broad-billed Hummingbird (Cynanthus latirostris) [XC34825]
by Daniel Lane from Arivaca Cienega, Pima Co., Arizona, United States (call)
Subspecies
Possibly forms a superspecies with Dusky Hummingbird (Cynanthus sordidus). A reported hybrid between these apparently refers to variation within adult male of Dusky Hummingbird (Cynanthus sordidus). Hybrids with Violet-crowned Hummingbird (Amazilia violiceps) and Magnificent Hummingbird (Eugenes fulgens) documented suggest possible close relationship between these genera and Cynanthus. Subspecies doubledayi sometimes considered a separate species.
Proposed subspecies toroi represents specimens from zone of intergradation between propinquus and doubledayi. Proposed subspecies nitidus is synonym of doubledayi. Subspecies lawrencei has also been considered a distinct species. Racial differences mainly in male head coloration, though this may vary clinally, so number of valid subspecies uncertain.
The following 5 subspecies are recognised:
magicus (Mulsant & Verreaux, J, 1872) - Southern Arizona and south-western New Mexico (south-western USA) south to Nayarit (central-western Mexico).
latirostris Swainson, 1827 - San Luis Potosí and Tamaulipas to northern Veracruz (east-central Mexico).
lawrencei (von Berlepsch, 1887) - Is Tres Marías (off western coast of Mexico). Considered by some authors to be a distinct species, Tres Marias Hummingbird (Cynanthus lawrencei).
propinquus Moore, RT, 1939 - Guanajuato to Michoacan (central Mexico).
doubledayi (Bourcier, 1847) - Guerrero, Oaxaca and Chiapas (southern Mexico). Considered by some authors to be a distinct species, Turquoise-crowned Hummingbird (Cynanthus doubledayi).
BirdLife International Species Factsheet