Evolution of the Chicken
From Dinosaur to primitive bird to supermarket discount. Although chickens thrive as a species – in the sense that billions of them roam the earth bio-industry – we doubt if the decision of the chicken-species to involve itself in a co-evolutionary relation with people, was a wise one. Lesson learned: always be very concise on what or who you get into a co-evolutionary relationship with. Chickens have limited abilities in this regard, but people should do better.
Via NRC charity Awards. Thanks René Pare.

Safran Foer talks about this in his book ‘eating animals.’ The same goes for cows, pigs, turkeys and other animals grown for meat and breeding.