Seagulls are everywhere we go in the Bay Area; swooping into Giants games, crowding runways at San Jose airport and eyeing tourists’ ice cream cones at the Ferry Building. To many, they’re a nuisance ...

Gulls are a little scary. They frighten me. I don’t mean literally, in a Hitchcockian sense. The nightmare comes in trying to sort out their identities. Skilled birders usually thrive on ID challenges ...