I have never heard anyone mention Cornish Cross roosters crowing... ever. But, this morning one of ours, 6 wks old, was doing his best to get a crow out, three different times. Yes, they were pitiful, but they were crows! Our meat birds also, scratch for food, roost on short roosts and run around the yard... well, maybe not run, it's more of a skip. ) But, they're having a good life.