Chicken is a farm animal in Skyrim
They are found in many farms across Skyrim
Near chickens you will sometimes find Chicken Nests containing Chicken Eggs which you can harvest as an ingredient
Note[edit]
Killing chickens is considered a very serious crime in Skyrim. It can result in a bounty, as well as citizens and guards attacking you on sight, as well as you and/or your companion being thrown into jail