We finally got our roosts put into the coop, but they are built about the same height as the windows, and the roosts parallel the window. I closed the window because I was concerned about drafts. Was this the right thing to do, or is it ok to leave it open? It's really not very windy here, but the night time temps are going to be in the 50's and 60's this week because a cold front is moving in. Thanks.