Every once in awhile, once a week or less, I notice a hen with a tiny bit of yolk on her face, comb or wattles. Each time I notice this I check all my nestboxes and the coop itself for signs of a broken or eaten egg and can't find any, not a single speck. My egg count hasn't gone down at all, so it doesn't worry me too much. It's more of a curiosity thing on my part. DH says it may happen when a egg is laid outside and the hens clean it up; though I've never found an egg outside the coop. I wonder if they've found something in their travels that closely resembles egg yolk when it dries. Any ideas?