I'm always searching for a product to feed the whole flock. Currently I'm feeding starter/grower to everyone of all ages and I have a feeder full of oyster shell for the layers. I have chicks inside that get this too. Today I found a feed at southern states called poultry maintainer. Its pelleted feed that says for all species of birds of adult age. Once big enough to eat pellets, would this be a good choice as an all flock feed with oyster shell on the side? I have many roosters and some older birds as well as about 16 layers so I don't like force feeding high calcium layer to the ones that don't need it. As a plus if they will do well on this product it really cheap. $10.50 for a 50lbs bag.