So, out of curiosity, why does it need to be covered?
If you're looking to build it to handle a snow load, you're talking about a pretty substantial roof.......A tarp, laid flat, will hold hundreds, possibly a thousand pounds of snow. You need some pretty solid walls to hold up that kind of...
You'll need some way to get into it.....for cleaning, spreading straw, bringing in treats, etc.......
Equally, if something gets in that shouldn't get in.....it'll need a way OUT.
I suppose you could get away with a removable panel on top.....as long as it's easy to move......and you've got...
I've seen that coop - they sell them here in Winnipeg at a chain of farm stores called Peavey Mart. For a pre-fab, it's REALLY nice.
If I recall, there is the small 'chicken door' on the far end......I would attach my run onto the end of the coop, and build it out from there.
I don't know if...