I counted this afternoon the following around a dairy located at 27201 NE 10th Ave., Clark Co.

Mew Gull 150
ring-billed gull 128
glaucous-winged gull 80 (About 3/4 are crosses)
American herring gull 13
glaucous gull 2
Thayer's gull 4
California gull 30

This appears to be a promising spot and I will be checking it more.

Bob Flores
Ridgefield, WA