Unlike the Pied Wagtail this bird is more commonly found by streams and rivers. The long tail not only helps with its balance but it also improves its agility while flying in pursuit of insects. They will also take water snails and tadpoles from shallow water.
The male has a bright yellow breast and black bib in the summer. The female's breast is a pale yellow, and the black bib is less prominent. They build their nest in hollows or crevices in April. They have 1-2 clutches a year.