Western Gray Kangaroo

Identification

The western grey kangaroo is one of Australia's largest kangaroos, weighing 28–54 kg and standing approximately 1.3 m tall, with males growing up to twice the size of females. It has thick, coarse fur ranging from pale grey to brown, with a distinctive paler throat, chest, and belly. Its most recognizable features are its darker grey-brown fur and darker colouration around the head compared to its close relative, the eastern grey kangaroo. Look for a sometimes blackish patch around the elbow as an additional distinguishing mark.

The long tail, measuring 0.80–1.0 m, aids in balance and thermoregulation. The species exhibits clear sexual dimorphism, making it relatively easy to distinguish males from females in the field.

Range & Habitat

The western grey kangaroo is found across almost the entire southern part of Australia, from just south of Shark Bay through coastal Western Australia and South Australia, into western Victoria, and throughout the Murray–Darling basin in New South Wales and Queensland. The species is absent from the far north and far southeast of Australia. Two subspecies exist: the Kangaroo Island western grey kangaroo endemic to Kangaroo Island, South Australia, and Macropus fuliginosus melanops, which ranges across the mainland with forms that intergrade from west to east.

Interestingly, the distribution of western grey kangaroos overlaps extensively with eastern grey kangaroos, particularly in the Murray–Darling basin, though these two species rarely interbreed in the wild.

Behaviour & Diet

Western grey kangaroos are nocturnal feeders, emerging at night to graze mainly on grasses and forbs, though they also consume leafy shrubs and low trees. They live in groups of up to 15 individuals and are highly social animals. During breeding season, males engage in ritualistic "boxing" contests, locking arms and attempting to push each other over to establish dominance. Usually, only the dominant male in a group mates with females.

The species has evolved a remarkable thermoregulatory strategy, varying its core body temperature in response to daily ambient temperatures. In summer, their lowest daily core body temperature—occurring mid-morning—can be 2.2 °C lower than during cooler spring days, allowing them to conserve energy when food is scarce. Mature males are nicknamed "stinkers" due to their distinctive curry-like odour.

Best Time & Places to See It

Since western grey kangaroos are nocturnal, your best opportunities to observe them are during dawn and dusk hours or at night. They are very common throughout their range, making them accessible to wildlife watchers across southern Australia. Kangaroo Island is a particularly excellent destination, offering reliable sightings of the endemic subspecies in a protected and managed environment.

The species is classified as Least Concern with an increasing population trend, estimated at around 3,800,000 individuals in commercial harvest areas in 2020, so encounters are reasonably probable throughout their southern Australian range.

Photography Tips

Photograph western grey kangaroos during the golden hours of dawn and dusk when they are most active and lighting is optimal. Look for the distinctive darker colouration around the head and the characteristic blackish elbow patch to confirm identification and capture identifying features. The sexual dimorphism between males and females provides excellent compositional opportunities—try to photograph both sexes to showcase the size difference.

Males' boxing contests during breeding season offer dramatic action shots. Use a fast shutter speed to freeze the movement of these powerful animals as they lock arms and push. The pale underside contrasting with darker fur on the back creates natural compositional interest, so position yourself to capture this contrast in good light.