There are a number of behavioral diseases of chickens. Many of these are due to stress and
cramped living conditions.
Symptoms: Chickens will display signs of pecking at each other and will sometimes start
an egg eating habit.
Causes: Stress factors include cramped living conditions, too much light in the coop and
less food and water.
Treatment: Give plenty of room to the chickens and do not leave the light on in the coop
longer than 10 hours for winter laying. Allowing your backyard flock to free range will
keep them happy and stress free. Egg eating must be stopped before it becomes a habit.
Sometimes it is due to lack of calcium or too much stress.