Where do you tie the straps down at? That's a great idea.
We have two bathrooms, but they both have windows in them, they are also really small. I don't think that we could house four ducks and 13 chickens in it. We also don't have a garage. We have a shed, but it's less sturdy than our coop. Haha!
We had hooks on the side of the coop and tie down anchors into the ground below it. Since we combined duck/chicken coop a couple months ago, we haven't redone it. We may end up just sinking in the ground anchors and strap over the roof.
Haha!