Homemade Chicken Feed for Healthy and Inexpensive Backyard Flocks. February 17, ... My Dad used to grind baked egg shells for grit and calcium,the main 'extra'feed he fed was Corn or Maize I guess. In the winter my Mam make proper dinner every day and my Dad would boil all the peelings, mash them up and mix them with bran and oats and Oil ...