Sorry it took me so long to get back here!
My chicken coop/pen is right next to my garden, separated by a chickenwire fence.
I have little doorways cut into the fence at each garden walkway.
When I need a walkway weeded, I place my tunnel over the walkway and open the little chicken door, the hens go in and clean up the row in 10 to 15 minutes. I coax them back out with grain, move the tunnel to the next walkway, open the next door and so on til all the walkways are weeded.
I plant my garden in wide rows about 4 ft across. My walkways are smaller.
As for the tunnels, I made rectangle frames out of 3/4" pvc the width of my walkways and about 10 ft long. I attached garden "hoops" to the frames and covered them with chicken wire. (Garden hoops are those wire semi-circles used to hold up bug barriers/ etc. over your plants).
I made my tunnel in sections so I can easily pick a section up with one hand, they are really light weight. I place two or three in a line to do each walkway. Just remember that the last one has to have chicken wire covering the end.
The whole tunnel is about 2 ft tall, tall enough for my largest rooster to walk through with no trouble.
Hope this makes sense, If I ever get my scanner working, I'll post a picture!
