Bobbin robin

On Wednesday May 13, 2009 I paid a visit to Powers bluff county park in Wood county Wisconsin. Powers bluff has some unique spring blooms, the most popular are the trillium. The trillium was my primary focus, that's until I noticed this robin bobbin up and down in a window of the ski areas shelter. This scene isn't uncommon since many native birds find their reflections in glass to be interesting. This robin was still bobbin up and down when I left and I'd expect it to do the same for the next several days.