|Allen's Hummingbird. March 30, 2014. San Elijo Lagoon, California. Greg Gillson.|
Allen's Hummingbirds breed along a narrow coastal strip from southern California to extreme southern Oregon. In fact, Allen's Hummingbirds barely make it 30 miles into southern Oregon. From this point northward to Alaska and inland Rufous Hummingbirds breed.
There are two subspecies of Allen's Hummingbirds. One is sedentary (non-migratory), found on the Channel Islands off Los Angeles, and only on the mainland in recent years. All the other Allen's Hummingbirds migrate to a very small area to winter in southern Mexico in the states of Mexico, Morelos, and Puebla.
I found Allen's Hummingbirds here in San Diego County in January, thus one of the resident form, now expanding their range farther from Los Angeles. Many other Allen's, presumably of the migrant race, arrived in March. And I did see one Rufous Hummingbird migrating through in March, too.