Before I do this, I wanted to make sure it was ok. I want to offer oyster shell as an option for 3 older bantams I have in the pen with 6 ten week old RIRs. Could I just get some shells and smash them with a hammer until they are fine enough for the chickens to eat? The Bantam's eggs are just a little soft, and I need to get a source ofr calcium since I have to feed them the grower feed.
Thanks
Thanks