Window prism tape stops bird strikes

Birds avoid the sparkling tape

We worry about all the windows in our new sunroom killing the songbirds at our bird feeders not too far away. So this fall we bought a roll of iridescent, reflective prism tape from Lee Valley, a Canadian mostly-mail order, tool company.
 We hung a strip of the tape on a thread in the center of the largest windows on each side of the sunroom. The tapes twist around on their threads creating sparkling colours. I am impressed at how well this has worked. I've only found a single dead bird and it might not even have hit the sunroom windows but possibly one in the main house.