A Challenging Warbler

I thought I had blogged about this last year, but I can't find it in my archives. In June of 2006, David and Sandy Dunkin were banding birds and got a warbler in the nets. They had never seen anything like this bird ever before. Theories were tossed about, but more importantly, two tail feathers were plucked and sent to Cornell for DNA testing. You can read the mystery and results at All About Birds.