Pigeons have also been shown to have atleast rudimentary capability for solving the Traveling Salesman Problem: http://www.psych.ualberta.ca/~psychgso/gradlunch

Pigeons have also been shown to have atleast rudimentary capability for solving the Traveling Salesman Problem: http://www.psych.ualberta.ca/~psychgso/gradlunchtime1011/lubyk.pdf http://www.psych.ualberta.ca/~psychgso/gradlunchtime1011/lub... http://link.springer.com/article/10.1007%2Fs10071-011-0463-9 http://link.springer.com/article/10.1007%2Fs10071-011-0463-9