What makes chicken egg shells wavy?

Chicken egg shells are not typically wavy. They are usually smooth and slightly porous.

However, there are a few reasons why an egg shell might appear wavy:

* Genetic factors: Some breeds of chickens are known to lay eggs with slightly irregular shells.

* Stress: If a hen is stressed, she may lay eggs with thinner and more fragile shells, which can appear wavy or uneven.

* Nutritional deficiencies: Lack of calcium in the hen's diet can also lead to thinner and weaker shells.

* Disease: Certain diseases can affect shell quality, making them appear wavy or deformed.

* Shell thinning: As eggs age, their shells can become thinner and more fragile, potentially appearing wavy.

If you're consistently seeing wavy egg shells, it's worth considering the factors listed above and possibly consulting a veterinarian or poultry expert.