SOUTH AND CENTRAL AUSTRALIA 193 



a race of the well-established mainland species. If 

 one leaves Flinders Range and enters the Eyrean 

 desert he will surely find a race of the bird observed 

 in the range. Map 83 indicates examples. 



The Glossy Cockatoo of the Australian Alps 

 changes in shade when it becomes an old inhabitant 

 of Kangaroo Island. 



The Rosellas belonging to the section of Crimson 

 Parrots are referred to in b, b 1 , b 1 , b 8 . 



The Yellow Parrot, c 1 , that the Adelaide district 

 gathers to itself, has its stronghold in c. The cli- 

 mate is not the same, neither is the tone of plu- 

 mage. 



All these parrots feed in different types of coun- 

 try, on different forms of vegetation, and racial 

 shades approximate to the surroundings. 



One change takes longer to make than the whole 

 of the allotted span of man's life. 



DRY BELT COCKATOOS 



Dampier in 1699 was the first to discover cocka- 

 toos. On the western coast of Australia, A, B, C, 

 congregate. Because of the mountain range and 

 another type of food upon the eastern coast, they 

 do not approach it. Map 84 shows that the dis- 

 tribution is more central than littoral. 



The Pink Cockatoo is a lover of the desert, fre- 

 quenting the native wells morning and evening. 

 It is the most beautiful of the "white section" when 

 its picturesque wings are fully exhibited. 



