Thanks. Other than that, I don't know why they aren't laying as much, their combs are a little paler in the hottest part of the day, but always regain their color... Maybe they're just out of their prime..To me it looks like dried poop. I have a couple hens who always have messy butts & feathers that look like this. I am now trying to trim their fluffy butt feathers shorter to see if it helps.