When I was a very small child, I used to go in vacations to my grandparents. They raised various animals, including many chickens. I liked to play with the ch

When I was a very small child, I used to go in vacations to my grandparents. They raised various animals, including many chickens. I liked to play with the chickens and I succeeded to train some of them to execute some simple commands (by giving them generous recompenses of maize grains). My grandparents and all their neighbors were amazed by this feat, because they believed that chickens are too dumb to be trained like a dog, despite having decades of experience in raising chickens. So I believe that when you do not look for evidence of intelligence, you do not find it.