"Free-ranging" on 1/2 acre

I wouldn't do rotational grazing on a half acre. A half acre is not a pasture here... it's a large garden or small yard. If you wanted to move them around on that I would use a chicken tractor instead of "free ranging". Otherwise you will probably close them off in too small of area and they will spend all their time trying to get over the fence (depending on breed some can clear an 8' fence with wings clipped) or they will hit the hot wire too often to be safe/healthy. In a larger area they will be more likely to stay in the fences and not feel the need to see what's on the other side. The plamondon site electric fencing section is for very large areas. I would either divide the land into roofed pens, build a portable chicken tractor, or just leave them loose on the whole thing with a perimeter fence.

Rotational grazing is also not really needed with such a small flock beyond the uses of a chicken tractor. Rotational grazing helps keep down parasite load by exposing the animals to less of their waste but those levels won't be noticeable with just a handful of chickens. It also helps prevent overgrazing an entire field which also isn't a problem with a handful of chickens on 20,000sq ft. They will likely kill the grass in a few areas they hang out the most like right in front of the coop but that's not really preventable unless we go back to the chicken tractor and confine them in a small area that we control.

http://home.centurytel.net/thecitychicken/tractors.html

 

We have 1 acre lot, when we let the girls out to free range we only have a cheap (thrifty, excuse me) Walmart plastic fence that is gray and appears to be hardware cloth around the area where they are allowed.
The only time they fly over is if I come out the back door, they think they need to fly after me!
Where the split rail is stationary landing zone on top, I'd use ribbon or thin string tacked onto the top of posts around the pen so they are not able to have the security of flying up , the string is not a positive place to land.
Good luck!
(I have no idea why they can fly over a 6' fence, yet 3' keeps them contained in the summer. lol)

Edited for an after thought, I don't know where the 1 acre is a garden in their area, but for me, our girls have less then 1/2 acre fenced in for them- including the garden - small boxed in garden, have never seen them kill the grass or eat that much. The green grass is natures way of giving these birds all the nutrition they can eat- also lessening your feed grain bill.
All you can do is trial and error, see how it works for you, poultry are so simple, they don't care if you give them gold lined dishes, they will stand in those just as well as the beat up hand me down ones that were given to you 40 years ago.
That is the fun of hanging with the "girls"!!!

 

I have my birds fenced in. I did it to protect my gardens as they were scratching up everything I planted. I still consider it free ranging. I do move the fenced area to give them new territory to range in. There are pictures on my BYC Page.

 

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