So would 6 med birds fit? and what temps do you have in winter? I am in a cold climate? thx
		
		
	 
I agree with almost everyone - except that the Cube and Pro are NOT intended as living areas, they are sleeping and laying areas only, so the common square foot rule for “coops” has to be figured differently. With Omlet, you need to provide sheltered run areas that are adequate in size for the number of birds, ideally at least 20 sq ft per.
I do not think the Cube or Pro runs are big enough, though with just three or four birds and if you move it every day that might keep them happy, but likely for just part of the day. What I found with Buckeyes, which are a foraging breed, but also with Orpingtons, they need much more space for their mental and physical health. Even as young pullets, the Buckeyes were done with the moved 9ft run area within a few hours and would start looking bored. Chickens like to keep busy. Plus, you can’t have a lot of “furniture” in a moveable run without a lot of hassle. So I’ve got two large 6x12 external runs I attached my coop and 9ft run to.
My Cube held four Buckeyes and a Buff Orp, no problems in winter, and extra ventilation (fans and modified poop tray with hardware cloth) in summer. It could fit six if you provide the push with the ventilation in summer.
I would not recommend the Omlet blanket for winter as it does indeed block the intended ventilation slots (I confirmed this with Omlet). That being said some people are very happy with it. What I did this last winter was block the direct winter wind while keeping the side slots and back vents open, with a tarp laid over part of it but held away from the sides with pool noodles. I get serious wind where I am and plan to reposition my Pro to be behind my run, using that as the block for the worst wind. I am at elevation, 2200 feet, and we can get -20F winters.
If you can swing the Pro, get that. You will be glad for the extra space when chicken math strikes. Or, buy another Cube, lots used on the market right now. But chickens like to roost together, and you may find your group all wants to cram into just one Cube. I have four in the Pro now, there is definitely room for the 3 more, and maybe one extra, I have coming later this year.