chicken age affect egg size
Here are the answers to those questions and many more. Hens and eggs. 1  Female chickens are called pullets for their first year or until they begin to lay eggs. 2  For most breeds, around 20 weeks is a typical age for the first egg. 3  Some breeds lay eggs daily, some every other day, some once or twice a week. For most breeds, around 20 weeks is a typical age for the first egg. 2  Some breeds lay eggs daily, some every other day, some once or twice a week. 3  Some individual hens never lay eggs, due to narrow pelvises or other anomalies.