Not much. I found some site in Europe that has a library of bird sounds. Tons of them. I thought there HAD to be some good ones with so many listed. But out of all of them, I only ended up with a few seconds of Raven that has too much background noise, and a few seconds of Magpie that does sound good, but it's only a few seconds.
I have used these sounds on stands that have produced though.
Still would like to find more and better magpie and raven. Coyotes fighting too.
- DAA