Hey y'all. I have a mixed flock of 6 hens. 2 of the hens are Australorps. 1 of the Australorps has literally laid for 3 weeks straight! Beautiful large brown eggs. We offer them a high quality layer feed with oyster shell (24/7) so hopefully that has been the reason she's been cranking them out. However, our other Australorp hasn't laid in over two weeks. She appears fine, but she isn't laying. Any ideas?