That is AWESOME graph/chart - thank you for sharing that.
Last year, I decided to try "a-frame" style tractors made from CP. They are 5' wide x 8' long and ... I have never measured how tall they actually are. The two CPs are 50' tall and meet in the center. I have not yet added the wheels I've planned on yet. Will soon - want to move these out to the pasture, and make some others for our front yard (for growing out chicks from the breeding groups).
I grew out the birds in these and not sure yet how the breeding would work. I didn't realize that they needed 40" for breeding, so this may not work. I was using the larger, walk-in 8x8 coops but wanted something smaller for our front yard and much easier to move. The 3 - 8x8's became permanent coop arrangements.
After growing up chicks in these - don't think they will work for a large breeding group. We'll see how it goes - I have one with a trio of FBCMs, 1 with a quad of 55 Flowery Hens, 1 with a quad of RBs (roo is HUGE!) and 1 with 4 CLB hens & 1 roo. Only the FBCMs had started laying - not consistent yet - late last fall. Haven't started back up yet since then.
Even moving them daily, the chickens just seem to be in 2 small of an area and that doesn't make me happy... Thinking about bringing in a fenced area in front of each pen - approx 4' tall, 2x4" wire w/ temporary posts & covered by bird netting to keep them in & other birds out. But that seems like it might turn out to be a lot of work? May put the 4 tractors next to each other, do fencing for each pair of tractors. Then let 1st 1 group out for a day; then 2nd group the next. See how they are impacting the turf in their areas and move it forward every few days rather than daily - forward past the area they were working.
Here's a pic w/ 2 - 55 Flowery hens before I tarped it and then again after. The split 2 ltr bottles along the top keep the CPs from tearing the tarp. I haven't installed the nest box yet either - will post pics when I have.
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Not fancy - but certainly worked for the chicks when they were smaller and will see if it works for the breeding groups. Free ranging just doesn't seem to be working for us - too many predators during the day when family is inside and I'm at work. The expensive/rare birds will no longer be allowed to free range at all - and will need to do HC aprons (& possibly on the whole structure) when move this farther away from the house.