I'm about to move onto five acres of mostly wooded land in the Pacific Northwest (south end of Camano Island - about half as much rain as Seattle but still pretty green). I want chickens only for eggs and I want to free-range as much as possible for two reasons: taste and feed cost. I'm guessing I'll have to feed them in the winter but in the warmer months it'd be great if they could live entirely or nearly entirely off the land. I plan to cull my hens at 2-3 years of age to increase overall production. I'm thinking of trying out Hamburgs, Leghorns, and Easter Eggers to see who can produce the most with the fewest losses to predators (hawks, coyotes, our own cat). I may have to resort to larger hens, not sure. My question is, how many chickens can my five acres support that way? It's just me and my husband but we eat a lot of eggs, therefore I'd like to keep about 20 layers so there's enough eggs even in winter (I plan to put a light in the coop). There won't be any other livestock grazing. Is this realistic?