Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!sdd.hp.com!hp-pcd!hpcvra.cv.hp.com!bruce
From: bruce@hpcvra.cv.hp.com. (Bruce Stephens)
Newsgroups: rec.birds
Subject: Re: Bluebird Comments
Message-ID: <26090001@hpcvra.cv.hp.com.>
Date: 19 Apr 91 01:08:13 GMT
References: <1991Apr18.150026.18512@NPIRS.Purdue.EDU>
Organization: Hewlett-Packard Co., Corvallis, OR, USA
Lines: 7

How big is the hole in your nest box?  I don't know what specied of
bluebird you are seeing, but having the hole no larger than 1 3/8"
diameter may be enough to exclude house sparrows and still admit
bluebirds.

-- Bruce Stephens
   bruce@hp-pcd.cv.hp.com