The white-throated dipper

Perched on a rock in the middle of the river, a squat bird with a short tail, brown with a large white bib, bobs up and down with his tail in the air. He then dives and only reappears a few moments later. This is how this bird hunts, diving into the water and then walking against the current along the river bed searching for aquatic insect larvae, small crustaceans or small fish, lifting pebbles with its beak to dislodge them.