Allen's Hummingbird (Selasphorus sasin) [XC690435]
by Paul Marvin from Tijuana Slough National Wildlife Refuge visitor center, Imperial Beach, San Diego County, California, United States (flight call)
Allen's Hummingbird (Selasphorus sasin) [XC125251]
by Eric DeFonso from Morro Bay, San Luis Obispo, California, United States (song)
Subspecies
Forms a superspecies with Rufous Hummingbird (Selasphorus rufus). "Selasphorus floresii" usually reckoned to be hybrid of present species with Anna's Hummingbird (Calypte anna).
The following 2 subspecies are recognised:
sasin (Lesson, 1829) - Coastal western USA (extreme southern Oregon to California, south to Santa Barbara County). Winters in south-central Mexico.
sedentarius Grinnell, 1929 - Islands off coast of southern California (USA).