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June 15, 2016 at 9:16 pm
#2392
Sparrow spooker is a few bird scar tape streamers over the box to keep the house sparrows away, most blues accept them fine.
http://www.sialis.org/sparrowspooker.htm
Edit: Whopes..too slow! :P
Used regularly on bluebird single box houses. Not sure Purple Martins would tolerate a spooker on a T-14.