Do I change their food in the summer. Over the winter I mixed scratch and lay crumble. They have access to the whole yard at all times too. Do I need to do something different in the summer? I don't want to raise their body temp too much with the scratch. I mix half/half. Maybe this is wrong too? They seem happy and I sure do get a lot of eggs everyday. I have noticed that they are eating as much of their feed either. Is this normal when the temps rise? Any suggestions/tips/help would be much appreciated. Thanks!