I have 4 layers right now. I get between 2 and 4 eggs a day. I can tell a difference between each egg so I've figured out that they all seem to be on about a 30 hour cycle. When I find an egg early of a morning I can bet in about 1 or 2 days I won't get one from her. Mine are all Orpingtons and just over a year old so they should be in their prime.