Hey all, a few weeks back, I had a chicken get egg bound and produce a couple of eggs that made me think she was pretty low on calcium. I've since been keeping them supplied with crushed baked eggshell, which has kept her fine thus far. I'm happy to keep doing that, but I'd prefer to be able to put out larger amounts of shell at a time (rather than breaking up a few day's eggs at a time). Can anyone tell me where on earth I can get oyster shell grit for chooks around NE Melbourne (Australia)? None of the stock supplies shops that I know of anywhere near me have any. There are plenty of overseas suppliers on ebay and the like, but they are like $20 for the bag of grit plus $30-50 for postage.. which I understand but obviously makes it incredibly expensive to buy.