Chickens

Chickens are domestic birds that serve as food for humans: They lay eggs, and they are butchered for their meat. While docile domestic animals are rarely of interest for heroes, they serve their part in the games in a more mundane way as part of almost every farm's lifestock.

Their appearance in games does not change significantly. In Ultima VII, they lay eggs; In U7BG, Mack will pay you for collecting eggs.