Subject: [Tweeters] ultrasonic hearing in birds?
Date: Feb 5 12:41:31 2008
From: Robin W Baird - RWBaird at cascadiaresearch.org


Hello all,

I'm wondering if anyone has used ultrasonic bark deterrents (for dogs) around birds? I would like to get one to deter our neighbors' dogs from incessant barking, but want to make sure it is not going to deter birds (or bats?) from the area. There are a couple of large trees on the border of the properties that are heavily used and contain a couple of nests.

Thanks very much,

Robin
Olympia, WA
rwbaird (at) cascadiaresearch.org