We have several hens and our Golden Laced Polish started laying white eggs about every other day when she was about 22 weeks old. At the same time our 2 Golden Comet hens started laying nice brown eggs daily(they were the same age). Recently...our Easter eggers have been laying pink and green eggs(they are four weeks younger than the others)....but the white eggs have stopped. We havent had any in over 3 weeks. The hen looks healthy. Can we expect her to begin laying again? What is the cause for this since she was laying pretty regularly and nothing has changed(diet, environment, etc)?