a bunch of my 4 day old meat birds have dried poop stuck to their bums. I cleaned up the worst ones and turned the heat a little higher for them to dry. What causes this? None of my 4 day old eggers have this, and they are in the same coop (different brooder pen) with the same conditions. The only thing I can think of is that the eggers are on woodshavings and the meaties on newsprint, as the meaties were having a hard time figuring out what to and not to eat so I put them on paper and scattered food. Also the eggers are eating a lot more than the meats. The meat birds are a heavy red cross, not white rocks. The eggers are a mix of BSL, RIR, marans and ameraucana.