How do you protect bluebirds, in their boxes, from invading sparrows?

Jra9254193
by Jra9254193
  1 answer
  • Hillela G. Hillela G. on Jun 03, 2017

    You can try adding a “sparrow spooker” can be effective to protect the nesting birds and scare house sparrows away. A sparrow spooker is an arrangement of hanging Mylar strips that dangle above the roof of the birdhouse and discourage house sparrows from approaching.