Willie Wagtail

The Willie Wagtail is a small, striking bird, glossy black above with a black throat and breast, a clean white belly, and a thin white eyebrow stripe that gives it an almost quizzical expression. Its most recognizable feature, however, is behavioral rather than plumage-based: the long black tail is almost constantly fanned and swept from side to side as the bird forages, a habit that gives the species its common name.

Despite its small size, the Willie Wagtail is famously bold, frequently seen chasing and harassing much larger birds, including hawks, magpies, and even domestic animals, that venture too close to its territory or nest.

Key field marks

• Glossy black upperparts, throat, and breast
• Clean white belly and undertail
• Thin white eyebrow stripe
• Long black tail almost constantly wagged side to side
• Fine, whisker-like bristles at the base of the bill

Similar species

The Willie Wagtail's combination of size, bold black-and-white pattern, and constant tail-wagging makes it essentially unmistakable within its range; no other small Australian bird shares this exact combination of features. Fantails such as the Grey Fantail are smaller and brown-toned rather than black and white.

Habitat

Willie Wagtails are highly adaptable, found in open woodland, farmland, parks, gardens, and especially near water bodies including dams, rivers, and wetland edges.

Range

The species is common and widespread across almost the entire Australian mainland, and also occurs in New Guinea, parts of Indonesia, and the Solomon Islands.

Migration

Mostly sedentary, with resident pairs holding territories year-round, though some local movement can occur in response to conditions.

Behavior

Willie Wagtails are active, confident foragers, often following livestock, mowers, or people to catch insects disturbed from the ground, and are well known for aggressively mobbing much larger birds, including raptors and corvids, that intrude on their territory.

Voice

The song is a cheerful, repeated "sweet pretty creature" or similar bright, whistled phrase, often sung both day and night, including on moonlit nights.

Feeding

Diet consists almost entirely of insects, caught by aerial sallies from a low perch as well as active foraging on open ground, with the wagging tail thought to help flush hidden prey.

Nesting and breeding

Nests are small, neat cups of grass bound with spider web, built on horizontal branches, fence wires, or other supports. Clutches typically contain three to four pale, speckled eggs, incubated by both parents, with the pair also cooperating to raise and defend the chicks.