Wow, thanks guys. Bit tricky to get idea of size but certainly food for thought (keep em comin').
Kanisha, thanks for sharing that, loved seeing it, unfortunately don't think it would survive our winds.
Frieslandfilly, love that one, looks sturdy and our sheepies would love it too. Clever OH!!!!
Good idea for the roof, bit worried ours (Onduline) might not make it through the first gales but have done my best - will change it for your style if our roof goes the same way as the wicked witch of the west.
And.... hay bed for them tomorrow it is then.