When you are first considering chickens you might wonder what kind of output to expect from your hens when they are full grown.
Most chickens will lay at most 1 egg per day. Some days they will not lay any eggs. This is due to the reproductive system of the hen.
Chickens have ovaries and develop follicles that eventually release an egg. From there, the process starts to deviate.
How An Egg Grows Inside a Chicken?
While rare, just as humans with twins, some hens seem to be predisposed to routinely producing double yolk eggs.
Double Yolk Eggs
When you have multiple chickens, the only way to know 100% for sure that a hen has laid two (or three) eggs is if she has been 100% isolated in a cage.