I uploaded a pic of the black throated blue warbler to the MOU website. http://moumn.org/gallery/index.php?region=MN
It's not a great pic - too far away and really bad lighting. Tried video too and that was worse. Unfortunately the extraneous noise (stone cutters, dogs, etc) made audio recording conditions worse than the photo conditions. The bird was seen on the south side of Wood Lake Nature Center. Enter back gate on Bryant Avenue. The bird is hanging out about 100 yards inside the gate. Take the left trail when you enter the gate and listen. He calls frequently. When I recorded the video he was singing a different song from the one I heard most of the time I was there.

