Any tips to keep Starlings out of the Kestrel box? They have had 2 clutches so far this year and all eggs have been stolen before they hatch.
We have watched the Starlings perch on the roof then dip into the hole of the box. The Kestrels fly in.
My first idea is put a large piece of plywood with only the hole on the front of the box making the front of the box double the size and NOTHING to perch on.