I checked the infamous poop chart and can't find anything that is resembling what I have been seeing. 3 times this winter, I have found hens with very long, 5" or more poops that are stringy. When broken apart, (oh yes I did) it contained hay strands. Why is it not processing, or breaking up. Hens seem to have some difficulty passing. Never seen this before and I have been doing this for a bit... Dehydration? I have been watering them more frequently as the waters freeze here but it happened again today. Thoughts?