Did you try your inbox traps early in the season? They work great when they are nesting. Try the Van Ert. Inexpensive and works great. Let them start a nest and then place thentrqp in. But of course watch it constantly so you can release native birds. Please forgive me if you know all this. I hate giving people info that they already know but am never sure. I love the DRST.
Tammy