The Glaucous Gull has a habit of vanishing suddenly, but I'm gradually getting a read on its movements. I've also worked out where it retreats to at high tide.

Large-billed Tern in winter plumage.

It stooped and snatched a crab.

Success with a crab here too.

It spots a crab and goes into a steep dive.

The plunge from the side. The flight style is completely unlike other terns — no matter how far away it is, you can tell it's a Large-billed Tern.

I was sitting on the beach watching when it came flying straight toward me.

Tandem flight — summer plumage (left) and winter plumage.

A few pairs of Black-naped Terns are incubating.

The Greater Crested Terns have decreased from their peak numbers but are still present. Perhaps these are non-breeding individuals.