I just bought a small bag of oyster shell from TSC for my 12 bantams. They are 20 weeks old and not laying yet, but I wanted to have the oyster shell on hand when they do. I opened the bag to look at it and OMG the pieces are huge! They're the size of very large peanuts, some as big as dimes. There's no way my little girls can eat these! So I'm not sure what to do now. I really wanted to feed Flock Raiser with free choice calcium on the side instead of layer feed. Any ideas? Thanks!