California Gull on the right, with Herring Gulls (click to see the larger version)

Continuing the trend of unusual gulls this spring, a first cycle type California Gull joined the Herring Gulls at Montrose Beach on May 4. California Gulls are rare at Montrose, with only about four previous records. Also, this is the first immature bird for us, the other records consisting of adults. I identified it as a California Gull by the darker gray upperpart feathers, rounder head, and downturned gape crease. More photos and a detailed description are at the link below.

eBird Checklist
https://ebird.org/view/checklist/S56913340