We got a mixed bunch of 8 hen chicks in May of last year, and they're all laying quite regular now. We have no roosters. Problem is, we're seeing spots in eggs every day. These are anything from a small blood-looking spot to larger clumps. If we crack 5 eggs, we are typically tossing at least one because of this. We feed the chickens a couple of handfulls of Homestead Feed Non-GMO Scratch with a handful of meal worms in the morning when we let them out, and Tucker Milling Non-GMO Layer Feed all day. We keep fresh water on hand every day, and keep their coop clean. What is causing this? We thought by now they'd grow out of any strange pullet egg problems. This has been going on since they began laying back in August.