About 2 weeks ago the girls went from laying 10-12 eggs daily to 4-6. Today we only got 2 eggs. Nothing has changed--food, water, light etc. We did have those 2 days of really cold weather but they slowed down prior to that. They are 10 months old and I have seen a few extra feathers laying around but nothing that would lead me to think they are molting. Didn't think they would molt in the winter. ANy thoughts on why the slow down?