Here is a video of the 2nd modification to make the dually starling proof. Since the first one worked, I opened the entrance hole back open some to see if it would still stop the starling and make it easier for the martins to enter and exit. It was windy and a tree limb keeps blowing in front of the camcorder and the autofocus trys to adjust to the limb but you can still see the video well enough to see the starling frantically trying to get in this new modification.