Nankeen Kestrel

The Nankeen Kestrel is a small, slender falcon named for its warm, rufous-buff or 'nankeen' coloured back and wings, contrasting with a pale grey head and tail in the male; females and juveniles are more uniformly rufous-brown with fine barring on the tail. Both sexes have dark eyes, a pale cere and legs, and the pointed wings and long tail typical of falcons.

As Australia's smallest and most widespread falcon, the Nankeen Kestrel is a familiar sight along highways and over farmland, where its distinctive hunting technique of hovering almost motionless in the air, wings beating rapidly while the head remains perfectly still, makes it easy to identify even at a distance.

The species has adapted well to agricultural and urban landscapes, often nesting on buildings, bridges, and other structures in addition to natural cliff ledges and tree hollows, and is commonly seen perched on roadside wires and posts scanning for prey.

Key field marks

• Small, slim falcon with long, pointed wings and a long tail
• Male: pale grey head and tail contrasting with rufous back and wings
• Female and juvenile: more uniformly rufous-brown with a barred tail
• Characteristic hovering flight with rapid wingbeats and a fanned tail

Similar species

The Brown Falcon is considerably larger and bulkier with broader wings and lacks the sustained hovering habit. The Australian Hobby is darker overall with a black cap and moustache and pointed, swept-back wings, and hunts fast-flying prey in direct pursuit rather than hovering. The kestrel's small size, pale rufous tones, and distinctive hovering flight are the best distinguishing features.

Habitat

Nankeen Kestrels favour open habitats of all kinds, including grasslands, farmland, roadsides, semi-arid country, and urban and suburban areas, generally avoiding dense forest.

Range

The species is found throughout Australia, including many offshore islands, and vagrants occasionally reach New Zealand and other nearby islands.

Migration

Most populations are sedentary or locally nomadic, though birds in the arid interior may move more widely in response to prey availability, and some seasonal movement occurs in southern regions.

Behavior

This kestrel hunts characteristically by hovering in place, facing into the wind with rapid, shallow wingbeats and a fanned tail while scanning the ground below, before dropping onto prey. It also hunts from an elevated perch such as a wire, post, or dead tree.

Voice

Its call is a shrill, chattering 'ki-ki-ki-ki', typically given near the nest or during territorial and courtship interactions.

Feeding

It preys mainly on insects such as grasshoppers and beetles, along with small mammals like mice, reptiles, and occasionally small birds, taken after hovering or from a perch.

Nesting and breeding

Nankeen Kestrels do not build their own nest, instead using cliff ledges, tree hollows, old stick nests of other birds, or ledges on buildings and bridges; the female performs most incubation while the male supplies food during breeding.