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Research Results: Gilwood Nest Box Attracts  Up to Six Times More Bluebirds! Final results from 2000:

Box Style No. of Boxes No. of Nesting Attempts
    Bluebirds Swallows
NABS Oval 21 4 16
Gilwood 21 25 7

"I've been field-testing various bluebird nest box designs to determine bird preferences... for approximately 13 years.  As I find boxes that work well, I continue to test against new box designs... For both 2000 and 2001, bluebirds showed a strong preference for the Gilwood Nestbox over the box that was most used in my previous trials (NABS oval hole)."
[Kevin L. Berner, Research Chairman, North American Bluebird Society.]

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"The Gilwood Nest Box is simple, but good nest boxes have to work in several way," says Steve.  "You need bird appeal first, the box has to be tight and dry, it must discourage predators, and it has to be easy to work with."  Research trials over several years have proven that the Gilwood succeeds on all counts.
 [Adapted with permission from Bluebird, Journal of the North American Bluebird Society, Fall 2000.]

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