This is a wonderful post on the backyard chickens site! I refer to this site quite a bit!!!  Whether you’re a beginning or experienced chicken owner, backyard chickens is a site to bookmark. You’ll visit it again and again.

” Have you ever wondered how a hen can lay an egg every day? Why some eggs are brown and some eggs are white? How many days an egg takes to hatch?

Here are the answers to those questions and many more.”

http://www.backyardchickens.com/a/interesting-facts-about-chicken-eggs