It's been an amazing time for bird watchers all over Wisconsin! Many species are passing through Dane County this weekend, and it should continue for another week at least. UW-Green Bay's species audio library of birds that breed in Wisconsin is a very good collection of MP3s birdsong that can be used to identify the birds you're hearing. Traditional tweeting at its finest!  Find it at:

http://www.uwgb.edu/birds/wbba/speciesaudios.htm