Working TogetherKeas, alpine parrots from New Zealandâs SouthIsland, are known for their curiosity, a hallmark ofintelligence. Here at a research aviary in Austria,IRXUNHDVRQHQRWYLVLEOHÆJXUHGRXWWKDWWRretrieve treats inside a wooden tower, they mustcooperate by simultaneously pulling chains onopposite sides.3+272*5$3+('$77+(.($/$%0(66(5/,5(6($5&+,167,787(81,9(2)9(7(5,1$5<0(',&,1(9,(11$ 56,7<
martin jones
(Martin Jones)
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