Yes they do. You will want to have a shade to keep your evening light out of the box , and be sure to mount it where preditors cant get to it from the roof or eaves. Caution: be very careful of placement, if Squirrels can get to it you could be showing the kids something they wont want to see!

I was so glad to find this posting. We recieved one of those window nest boxes for Christmas and my daughter and I have been thinking of where we will be putting it. Our nest box came with a shade that you put on the inside of the house and can be moved from side to side.