This is great... Maybe I'll put my birds in the greenhouse.... Someday with some modifications.I came across this image last fall and it just struck me as a great winter Run to create. Very cozy. Lots of roosts. Jungle Gym things to do for the birds to help with winter boredom...etc. It looks like bent pvc pipes holding wire and attached to 1x4 or 1x 6's with plastic over the top. Only issue being you'd need to vent this somehow. But the snow load should shimmy right off and The plastic shouldn't be easy to catch in a strong wind...etc. The Winter Wind does amazing things with tarp and plastic. When you think you have it all sealed and buttoned down-- it usually comes up and needs attention before the winter is out. IDK...It's a winter set up of a Hoop Coop. For those looking for an inexpensive way to make a covered run...this may be something to take a look at.