for the first time ever, in 23 years as a landlord, I did not have a starling to deal with. I’ve had SREH ( starling resistant entry holes) for as long as they have been around. Maybe twenty years. But always there has been one or two cavities breached
I’ve used crescent, original excluder and Conley 2. Only he excluder has never been breached. Last year the crescent openings on my trendsetter house and the Conley plates on my T14 were breached by several starling pairs.
The solution to the problem came by modifying the opening s do that they are the proper height above the porch. On the plates I cut one- eighth inch from the bottom of the plate , reattached then caulked along the bottom to secure. For the trendsetter, I added a lift to the porch in order to get the opening at proper height. with the openings 1/8 or less from the porch the SREH are much more effective. This issue should be addressed by the manufacturer.
One year success doesn’t guarantee long term success but it’s great results so far.
Here you can see the addition to the porch in order to make the entrance the proper height.
