What is it called when chickens eat their own eggs?

It's a common problem among chickens, and there are several reasons why it might happen.

Here are a few of the most common causes:

* Calcium deficiency: Chickens need calcium to form strong eggshells. If they aren't getting enough, their eggshells will be thin and brittle, making them easier for the chickens to break and eat.

* Nest box issues: If the nest boxes are dirty, cramped, or lack enough nesting material, chickens may feel uncomfortable laying their eggs there. They may then break and eat the eggs as a result of stress or frustration.

* Boredom: Chickens need mental and physical stimulation. If they are bored or don't have enough to do, they may start eating eggs out of frustration.

* Taste preference: Some chickens simply develop a taste for eggs, and may start eating them regardless of other factors.

* Pecking order: Chickens have a social hierarchy, and dominant chickens may break and eat eggs laid by lower-ranking chickens.

It's important to address the underlying cause of egg eating to prevent it from happening again.