we buy from a mill too, one of my freinds is apa judge, long time ago he told me to get the feed that he buys, it is special made and has a little greens in it..i never looked back..the birds even look so much better year round..pound for pound it is cheaper..I found a long time ago if you get you feed from a local mill that the prices ain't as bad as at a feed store like say TSC.
Chris