Deluxe Insert Trap for Wooden Bluebird Housing

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Turn your PMCA bluebird house into a House Sparrow nest-box trap.

This insert trap thumb-screws into the inside of any wooden bluebird house that will accommodate its 3-1/4" x 6-3/16" dimensions, with the entrance holes aligned.

Especially useful for people with bluebird trails or martin colony sites. This trap offers several advantages over similar traps.

The entrance hole measures almost 2", making it more forgiving when trying to line up with the entrance to the wooden box. It is extremely thin, making it much less conspicuous to a suspicious house sparrow  Thumb screw included.

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