Brown Falcon

The Brown Falcon (Falco berigora) is a distinctive Australian bird that can often be identified by a combination of plumage, shape, behaviour and voice. A medium-sized falcon with broad wings, long legs and highly variable plumage ranging from pale cream-brown to very dark brown. Many show a dark moustache and streaking below. Adults are typically about 41–51 cm long, so size can be a useful clue when you compare the bird with nearby species.

How to identify a Brown Falcon

A medium-sized falcon with broad wings, long legs and highly variable plumage ranging from pale cream-brown to very dark brown. Many show a dark moustache and streaking below. When you are trying to identify one in the field, start with overall size and body shape, then check the head pattern, bill, wing markings, tail and any unusually bright colours. Lighting can change how feathers look, so it is safer to use several features together rather than relying on one colour.

Brown Falcons often hunt from fence posts, poles or dead trees, dropping onto prey or quartering low over open country. They can also soar on rising air. Behaviour is often just as useful as plumage. A bird that repeatedly uses a particular feeding style, posture or flight pattern can be much easier to identify even when it is partly hidden or too far away for a perfect view.

Where does the Brown Falcon live in Australia?

Widespread throughout Australia in open country from coastal plains to the arid interior.

Typical habitat includes grassland, farmland, open woodland, scrub, roadsides and semi-arid country. The best places to look are areas that combine suitable food with safe roosting or nesting sites. Distribution can shift locally with rainfall, flowering, breeding seasons and food availability, so a species may be common in one district and much harder to find only a short distance away.

What does the Brown Falcon eat?

Small mammals, reptiles, birds, insects and carrion. The exact menu can change with season and location. Wild birds generally do best when they can use natural food sources, so this guide describes normal feeding ecology rather than encouraging people to offer processed human food.

Watching how a bird feeds can also help with identification. Note whether it forages on the ground, probes mud, takes nectar from flowers, hunts from a perch, dives into water or catches insects in flight.

Behaviour and calls

Brown Falcons often hunt from fence posts, poles or dead trees, dropping onto prey or quartering low over open country. They can also soar on rising air.

A loud, repeated cackling or chattering call is commonly heard around breeding territories. Learning even one characteristic call can be extremely helpful because many Australian birds are heard before they are seen. Calls can vary with alarm, courtship, contact between flock members and time of day, so use voice together with visual clues.

Nesting and breeding

They often reuse old stick nests built by other birds, or nest on ledges and occasionally in tree hollows. Breeding timing varies across Australia and can be influenced by latitude, rainfall and local conditions. If you find an active nest or dependent young, observe from a respectful distance so the adults can continue normal feeding and defence behaviour.

Similar birds

Nankeen Kestrels are smaller, slimmer and hover much more frequently. Black Falcons have longer wings and a different overall shape. If you are unsure, compare bill shape, body proportions, eye colour, leg colour and voice as well as plumage. Photographs taken from different angles can be especially useful for checking difficult features after the sighting.

Quick identification tip

For a fast identification, remember three things: the bird is approximately 41–51 cm long; its key visual clue is a medium-sized falcon with broad wings, long legs and highly variable plumage ranging from pale cream-brown to very dark brown. Many show a dark moustache and streaking below.; and its usual Australian setting is grassland, farmland, open woodland, scrub, roadsides and semi-arid country. Those three clues will usually narrow the options quickly before you compare similar species.