They have been eating "chicken starter" only and today they had a peice of watermelon. They went absolutely crazy for it and ate it all in a few minutes. Afterwards I googled and came across a few websites saying they need grit or sand? Can someone explain this to me. Where do I get grit? Or can I just give them sand (the kind purchased at the hardware shop).
Do I put it in with the chicken crumble?
Thanks in advance just feeling a bit confused about it.