We found out that guineas can make it over an 8' enclosure. Chickens can't, so partitioning off my garden space would be pretty easy. It's 60'x90', so I can divvy into 3's and let the girls have a third each year and the dogs can't molest them. Putting 10' high fence around the yard part of the property, then divisions within that is just cost-prohibitive. The panther and they coyotes have already gotten all but two of my neighbor's guinea flock that started out at 20.
I didn't realize how big 2-1/2 acres was until I began to mow it LOL. When we took over this place, there was no fence at all and what there was of yard was 3' high in weeds. I took it back with a push mower a section at a time. For the first year, I'd start mowing at one end of the yard as quickly as I got home, push like a maniac until dark, come in, eat supper, shower and flop exhausted into bed. I'd spend all weekend mowing. At the end of the week, I'd have to start all over from jump the next day.
It's bigger than ya think. Shoot, it was bigger than I thought when I bought it. There's six more acres of woods needing attention. It has taken me five years just to get a handle on the immediate grounds. I'll get to the woods when I get a handle on the fleas. I'm not the young strapping studlet I used to think I was heh