The amount of feed they eat will depend on the protein and bulk of the feed. I feed a 28% protein commercial gamebird crumble or pellet, a pen of breeding aged birds, four hens and a cock will normally consume about a quart or a little more depending on the temperature. Hot weather will increase water consumption and lower the feed intake. Cold weather will have the opposite effect increasing the feed and lowering the water intake. Feeding treats like vegetables do not cause the feed intake to lower much at all because there is little protein but very beneficial in vitamins and minerals. All of my breeding pens have grass growing in them that I can not monitor the consumption but I am sure that they are eating that all day as well.