I have 22 hens plus a cockerel and they have ad lib layers pellets in a feeder, plus a scoop (approx 1lb weight) of mixed corn to get them in at night. If they are shut in, they get through approx 1 kilo each per week; when they are free ranging I reckon they eat half that amount of pellets.
My ducks - currently 3 adult Campbells and 4 juvenile Muscovies - eat 2 scoops of layers plus half a scoop of corn per day. (1 scoop = approx half a kilo) Some of this is actually eaten by hens who have found out there is extra feed in the duck pen.
I have had wine and have forgotten the question - does this help?