Download e-book for iPad: grzimek's animal life encyclopedia. mammals ii by Michael Hutchins

By Michael Hutchins

ISBN-10: 0787653624

ISBN-13: 9780787653620

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Being large, they have little need of a secure resting place, and most make do with patches of scant shade beneath desert shrubs such as saltbush. Smaller kangaroos and wallabies favor thickets of denser vegetation. While none of the large macropods build a nest as such, individuals may stake a claim to a particular spot. For example, the quokkas of Rottnest Island in Western Australia compete fiercely for the very limited number of shady resting places. The lack of potable water on the island in summer means that shade in which to avoid overheating is at a premium, and dominant individuals will claim the best spots as their own.

It only occurs in minuscule numbers at one site in the wild. A recovery program, involving reintroduction to protected sites of captivebred animals has been in operation since 1989. The principal continuing threat is predation by introduced carnivores, particularly red foxes and cats, for which species continuing control is essential for the reintroduced populations to survive. The Tasmanian population appears to be declining in some parts of its range, such that it is locally threatened in its postulated focal range but has, conversely, expanded into new areas as forest has been felled and converted to pasture.

20 Bilbies are solitary animals. Observed groups appear to gather only in response to available food resources and show no social cohesion. Males show some territoriality by scentmarking, but there are no signs of physical aggression towards other males. Both males and females hold overlapping home Grzimek’s Animal Life Encyclopedia Vol. 13: Mammals II Subfamily: Bilbies feet moving together and the front feet alternately. It rarely strays more than 330 ft (100 m) from a burrow. A bilby may visit several burrows during the night, before selecting one in which to spend the next day.

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grzimek's animal life encyclopedia. mammals ii by Michael Hutchins

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