We live in the mild Pacific NW. This is our 1st time with chickens, pick them up on Sunday (thanks Gardener!), the hen house is 4L x 5W x 4H with a covered 5 x 10 run . Picture(s) here, <http://www.flickr.com/photos/benish/1751874637/in/set-72157602222742046/ >. Long story short we got carried away during construction and made some changes on the fly etc., and improved ourselves right out of space for the vents Now that we are stuck with this design we arent sure about vent placement. Where should we install the vents: A) on the blank wall opposite the nest boxes (this is where the roosts are going); B) in the ceiling; C) in the wall and in the ceiling? Your expert opinion is much appreciated. BTW we are planning on using floor heat registers so we can adjust the air flow as needed. Thanks.