We've got 9 gals (4 months old) in our backyard flock, all laying varieties (Australorp, Rhode Island Red, White Leghorn, Black Star, White Rock, 2 Barred Rocks and 2 Buff Orpingtons). They get out into our garden/yard maybe 3-4 hours a day. We are feeding them an organic layer mash as well as table scraps. We're considering making our own organic chicken feed, and I'm calculating how much it will cost. To do that I need a good estimate of how much they're likely to eat as adults. I've seen 1/4 pound per chicken per day mentioned elsewhere. Is this true even if they're free ranging a few hours a day and eating table scraps? What has your experience been with this? Thanks.