A bluebird box with a 1.5" hole in the roof will do wonders at keeping the House Sparrow away.  Not 100%, but 90% in my experience.  Cover the inside with rat wire to keep raccoon paws out.

The House Sparrows want a confined space with only one opening and dislike the 2nd hole.  The Bluebirds (and anything else) no not seem to mind as it mimics some more natural nest cavities such as one near the top of a decaying tree or an old fencepost.

Good Birding,
Glen Lovelace III
Seaford, DE



-----Original Message-----
From: Maryland Birds & Birding [mailto:[log in to unmask]]On
Behalf Of Rick Sussman
Sent: Thursday, March 27, 2008 11:10 AM
To: 
Subject: [MDOSPREY] New yard bird!

Rick Sussman wrote:

Now I have to remain vigilant to keep the house sparrows away!
 
Cheers,
 
Rick Sussman
Woodbine,MD
 (mailto:[log in to unmask]) 



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