This youTube video has some nice samples and background info about these bird song whistles:Dreday wrote: ↑Tue Feb 11, 2020 10:14 pmInteresting! Anyplace to hear some audio samples? I could find any on the website.ytliek wrote:Custom whistles for the tweeters...
http://www.mixedflockorchestra.net/?con ... 20whistles
if you're into that sort of thing.
https://www.youtube.com/watch?v=QYXIwri3_gg