There are some 140 species of birds in the Gawler Ranges, including the Emu, Wedge-tailed Eagle, Major Mitchell's Cockatoo and Singing Honeyeater.
Where Galahs readily occupy cleared and part-cleared land, Major Mitchell's Cockatoo requires extensive woodlands, particularly favouring Callitris, Allocasuarina and Eucalyptus.
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One Major Mitchell's Cockatoo that has become quite famous is "Cookie," a beloved resident of Illinois' Brookfield Zoo near Chicago since it opened in 1934.
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Threatened animal species either known or thought likely to be present on Bon Bon include Plains-wanderer, Major Mitchell's Cockatoo, Chestnut-breasted Whiteface, Thick-billed Grasswren and Southern Hairy-nosed Wombat.