I’d definitely take the nestbox off the fence and mount it on a slick metal post with a predator baffle. Bluebirds sometimes stay around all winter, but they won’t use the nestbox, except for possibly a roosting box.
The HOSP don’t bother the birds too much once they’re out of the box. The HOSP is no match for a Bluebird out in the open – it’s inside the nestbox where they have the upper hand … er… beak, so to speak.
Central NY
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