A Greater Crested Tern that had caught a large crab.

It swallowed it whole, legs and claws still attached.

After the meal it pecked at nearby pebbles. It's the first time I've seen a tern swallow pebbles.

A crab happened to pass by while it was resting on the sandy beach, and the bird ran over and pounced on it. So they hunt like this too.

Adult winter plumage. Only nine primaries visible, which probably means P10 has been shed.

Looking at the upperwing from below, you can see P10 has grown out by a few centimetres. Once that feather is fully grown, the moult is as good as done. ^^

From this angle, the still-growing P10 on the right wing is visible. Not visible on the left.

Bridled Tern, head-on. Among the terns, this species has relatively long wings for its body size.

An Osprey was resting in a distant Yaeyama mangrove.