Thank you Mary! For snow, I did consider that. I plan to keep the roof shoveled as we do with the cars and pathways. I'm comfortable with this considering our average snow load here. I do have another support I plan to put in. Wow, that is scary a tree came down but thank goodness the chickens were okay. It sounds like you built a bunker! I'd love to see photos for inspiration... you know, to prepare for that whole chicken math thing.
@Grey Gables your coop is gorgeous!!! I love that you added on already. Those are going to be some happy chickens. The solar lanterns and rain barrel are such nice touches too. Haha it looks like Vivian is pretty supportive of the chicken venture

Either that or doing that cat thing where they have to sample every water source lol. Are those little black things above her head small solar panels?
The heated base is another great waterer option. Yes, I am 99% sure the coop is secure but you can't quite tell till the predators are tempted. I'd like to lock them up at night for at least a week just in case. I've been inspecting the perimeter daily. Haha yes to the raccoons... the locking carabiners should do the trick. I did consider the key locks though. My thought is I can always upgrade to padlocks. Thankfully not in bear country either. Thank you for all your suggestions! It's nice to be part of such an experienced community.