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 | Sparrow-resistant Blue-bird House | | #10044 SPARROW-RESISTANT BLUEBIRD HOUSE (10"h x 6-1/4"w x 8-1/2"d)
This Kentucky style, slot entrance bluebird house is designed to thwart sparrows. According to research at the University of Kentucky, bluebirds prefer a slot entrance to the standard circular hole -- sparrows prefer the opposite. In addition, sparrows don't like a shallow box and bluebirds don't seem to mind. This box is only 5" deep but if sparrows still continue to be a problem, a wooden insert is included to reduce the depth even more. Sparrows rarely use the 3-1/2" depth, but bluebirds will still occupy it.
Awesome product!
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