Re: use of birdsong playback

["Graham" gjmeadows]

Hi all
The only time i have come across this type of thing is when i was in the
RAF we used to send out an air traffic controller in a landrover with
horn speakers on the roof. They would play terribly distorted bird of
pray calls at high volume to deter the 'other' birds from congregating
on the airfield.

I don't think it had the affect of attracting other birds of pray, just
scare off the smaller birds

I am not sure if this practice is still used, and if so what effect it
has on the local bird population?
--
Graham.
County Durham, UK
Olympus LS-5
Sennheiser ME66