Chicken
Wow! The chicken is the closest living relative of the tyrannosaurus-rex. Did you know chickens are extremely sensitive to their environment?
Heat, noise & change of routine all affect their egg production. If you make the chickens think it is daylight (even at night) they will lay bigger eggs with harder shells. Chickens have over 200 distinct noises they make for communicating. Their language gives different alarm calls depending on which type of predator is threatening them.