I bought 4 chicks in April, they were all born April 5th 2016. I purposely got 4 different breeds which I believe are: - speckled sussex - gold laced wyandotte - ameraucana - isa brown I've been getting eggs now for past two months, and only have three colors of eggs. How do I know that all the hens are laying? Is it possible one of the hens could not be producing or ever produce? Here is a pic of collection of eggs for three days.