Yes. Technically mine have a 1/4 acre. Realistically The Campines & Vorwerks have 3/4 of an acre as they utislise my neighbours' yards. Neither minds. One has chickens of her own & doesn't mind the occasional visitor. The other is actively encouraging them since they cleaned up her grasshopper...
My flock has a 1/4 acre backyard with an established garden they are let loose in @ sunrise. I secure them @ night when they go to roost. The fences keep most of them in [Campines & Vorwerks excepted] & there are few predators.