[2] A slender, long tailed wagtail with light bluish grey upperparts and white underparts with a narrow black breast band.

[4] The mountain wagtail is mainly insectivorous, catching mainly flies with most of its foraging conducted along watercourses, where it searches for prey on rocks, in sand and in shallow water.

They have also been recorded eating caddis flies, mayflies (both adults) and nymphs, dragonflies and damselflies, butterflies and moths, beetles, grubs, slugs and tadpoles.

Both sexes build the nest which consists of a bulky cup lined with root fibres, plant stalks and fibrous tissues, resting on a foundation of material moistened by water then set to dry.

Sometimes the nest is placed in plant debris caught in a branch over water, a tree near a deep pool or occasionally in man-made structures, such as bridges or buildings.