Currently I have 11 standard sized birds, only 4-5 weeks old at the moment. DH asked me to figure out how much feed is going to cost once they're grown. We may add 2-3 more easter egger chicks, also standard size, so possibly 14 birds total in the flock if we do that. They will get to free range part of the day on about a 1/4 acre I estimate? Our lot is 1/2 acre, so I figure discounting the house and front yard that's about what's left. We'll give them treats from the garden/table, whatever doesn't go in the compost. Our orchard is young, we planted 25 bareroot fruit trees this year, but I expect they should have a steady supply of bugs off the fruit trees someday. We're counting on them to do our pest control since we don't want to use any pesticides. So about how many lbs of feed will they go through in a month? Thanks!!!!