Black-faced kangaroo, Mallee kangaroo, Sooty kangaroo, Western gray kangaroo, Western grey kangaroo, Western grey giant kangaroo, Black-faced kangaroo, Mallee kangaroo, Sooty kangaroo
The western grey kangaroo (Macropus fuliginosus ), also referred to as a western grey giant kangaroo, black-faced kangaroo, mallee kangaroo, and sooty kangaroo, is a large and very common kangaroo 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 in the entire Murray–Darling basin in New South Wales and Queensland.
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CrepuscularCrepuscular animals are those that are active primarily during twilight (that is, the periods of dawn and dusk). This is distinguished from diurnal...
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HerbivoreA herbivore is an animal anatomically and physiologically adapted to eating plant material, for example, foliage, for the main component of its die...
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FolivoreIn zoology, a folivore is a herbivore that specializes in eating leaves. Mature leaves contain a high proportion of hard-to-digest cellulose, less ...
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TerrestrialTerrestrial animals are animals that live predominantly or entirely on land (e.g., cats, ants, snails), as compared with aquatic animals, which liv...
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JumpingJumping (saltation) can be distinguished from running, galloping, and other gaits where the entire body is temporarily airborne by the relatively l...
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TerritorialA territory is a sociographical area that which an animal consistently defends against the conspecific competition (or, occasionally, against anima...
Among animals, viviparity is the development of the embryo inside the body of the parent. The term 'viviparity' and its adjective form 'viviparous'...
Altricial animals are those species whose newly hatched or born young are relatively immobile. They lack hair or down, are not able to obtain food ...
Grazing is a method of feeding in which a herbivore feeds on plants such as grasses, or other multicellular organisms such as algae. In agriculture...
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PolygynyPolygyny is a mating system in which one male lives and mates with multiple females but each female only mates with a single male.
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Dominance hierarchyA dominance hierarchy (formerly and colloquially called a pecking order) is a type of social hierarchy that arises when members of animal social gr...
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starts withThe Western grey kangaroo is one of the biggest and most abundant of kangaroos, and can be told apart from its close relative, the Eastern grey kangaroo by the browner fur, darker color of the head, long dark ears which are almost hairless on the backs, and in some of them, a blackish patch at the elbow. The male is much bigger than the female, and has longer and more muscular forearms and shoulders, heavier claws on its forepaws, and thicker skin over its belly, which helps in absorbing the impact of kicks when fighting. The adult male has a strong, curry-like smell, which has given it the common name ‘stinker’.
The Western grey kangaroo inhabits the southern region of Australia including western Victoria, southern Queensland and southern New South Wales. It is also found on Kangaroo Island off Australia's southern coast. They inhabit woodlands, open forests, open grassland areas and coastal heathland. They are sometimes found in areas near cities and on golf courses.
These kangaroos form social groups or "mobs": small family groups where an adult female is the matriarch, with other females in the group, as well as young. Male kangaroos compete for dominance of these groups, with the strongest becoming the leader. During the mating season, young males can form male-only groups that are separate from the mobs. More mature males sometimes have loose associations with other male kangaroos which vary from one year to another. Old male kangaroos are usually solitary. This species, in the east of its range, may mix with mobs of eastern grey kangaroos, although they usually exist separately, as they prefer different habitats. The Western grey is most active from the late afternoon until early morning, and it rests during the day under trees and shrubs.
Western grey kangaroos feed on grasses, leaves, forbs, tree bark, and shrubs.
These kangaroos are polygynous, the males competing during the breeding season for females. During such "boxing" contests, the kangaroos lock forearms and attempt to push one another over. Typically, only the dominant male of the group will mate. These kangaroos can breed year round, but there is a peak in reproductive activity in spring and summer. Gestation lasts for only 30 days, and the tiny newborn climbs up by itself through its mother's fur to the pouch, where it will remain to be nursed. Most of its development takes place in its mother's pouch, and the young emerges after about 9 months, suckling until it is about 17 months of age. Female western greys become sexually mature at about 20 to 36 months, males at about 20 to 72 months.
Western grey kangaroos are still abundant through the majority of its original range, with the population possibly even expanding. However, this species may be threatened by the spread of agriculture, particularly where the land has undergone clearance for cereal crops, and it may also have gone from many areas densely populated by people. Western greys are very numerous in some regions and it is considered as a pest species, seen as a competitor for water pasture with domestic cattle and sheep. The kangaroos are culled under license every year, to prevent damage to pasture and crops. Additionally, regulated commercial hunting is allowed for meat and skins, the skins providing a high-quality, long-lasting leather. There is discussion about whether populations of kangaroo can sustain the present hunting levels, particularly in the face of drought and increased human habitat modification.
According to the Australian Government Department of the Environment, the total population size of the Western grey kangaroo is 2,348,393 individuals. Today western greys’ numbers are increasing and they are classified as least concern (LC) on the IUCN Red List.
Western grey kangaroos control the growth of vegetation by feeding on forbs and grasses.
Social animals are those animals that interact highly with other animals, usually of their own species (conspecifics), to the point of having a rec...