I have issues with feeding guts from chickens to chickens. Call me silly but it's just like making them be cannibals. I know they would do it on their own and will eat their babies but with all the issues with things like mad cow disease in cows and trichinosis in pigs I just wonder if it may cause issues after a while for the flock. Fish guts on the other hand I give to them all the time they love them. and will gobble them up. I will bury the heads in my compost heap since fish meal is actually an additive that you can guy but the rest goes to the critters either dog or chicken who ever gets to it first.