There is no nutritional difference between a brown egg and a white egg. Different breeds of birds lay a different colour egg. For example, brown hens lay brown eggs and white hens lay white eggs. A hen lays one egg at a time. It takes 26 hours for the hen to make an egg.
Eggs come in different sizes.
Hens lay eggs about each day, which are collected, cleaned and carefully stored, to be sent to the hatchery. Fertilized eggs are shipped to a hatchery where the eggs are incubated and in 21 days hatch. The pullet chicks are vaccinated against the most common chicken diseases and beak-trimmed with a laser by trained professionals who work in the hatchery. Pullets can either be raised in cages or on the floors of special climate controlled barns. Pullets stay until they begin laying eggs at 18 weeks and then are moved to layer barns.