Cartoon Image reproduced with permission from http://www.nicholsoncartoons.com.au/

I love this cartoon by Nicholson, who sketches for the Australian newspaper. It was printed on 22nd June, 2006, when the then Environment Minister, Senator Ian Campbell vetoed a $200 million wind farm development due to the risk to the critically endangered Orange Bellied Parrot. What is the significance of the Red-tailed Black Cockatoo in the cartoon?