Snagged this off the internet and got a laugh! On a more serious note, Scientific American has a great article, titled:

The Startling Intelligence of the Common Chicken: Chickens are smart, and they understand their world, which raises troubling questions about how they are treated on factory farms

A free trial subscription is needed to read the full article, but here’s the link, if curious:

http://www.scientificamerican.com/article/the-startling-intelligence-of-the-common-chicken/