I may just have to order as well. You don't want to feed layer to silkies because they don't need all that calcium. So I really need a starter grower feed for everyone and will offer oyster shells.Well I haven't found an organic mill, but I'm still on the look out. I did find a retailer for countryside organics layer feed, but not for starter/grower. Through Grace valley farms (they are licated in trinity) the feed is $34 for a 50# bag. It's cheaper than going through the site directly. I eventually gave in and ordered grower through countryside. If you find something better let me know I'm still on the look out.