Well, no they don’t then!   I conclude from this paper that constantly honking your horn is the only effective method to alert deer.  Not such a good idea in populated areas.

 

I watched this recent PBS program on deer overpopulation in NY, it’s a big problem:  http://video.pbs.org/video/2365000001/ 

 

Stuart

 

From: Alistair Bell [mailto:albell@shaw.ca] 
Sent: Sunday, September 08, 2013 6:36 AM
To: Stuart MacMillan
Cc: vanagon@GERRY.VANAGON.COM
Subject: Re: Deer whistles--do they work?

 

http://www.bioacoustics.uconn.edu/reports/ARLOManuscript326%20FINAL.pdf

 

 

Alistair