- Feb 5, 2009
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To introduce oyster shell to maturing chickens? I know I'm supposed to wait until they are of 'egg-laying age', but does this mean I shouldn't feed them any until they actually lay an egg, or until they turn a certain age? I was hoping to introduce new chickens to the flock when they are around 3 or 4 months old, but my older hens always have oyster shell available, and I don't want these younger hens living with the older ones if the oyster shell will still harm them at that age.
Thanks in advance!

Thanks in advance!