There's been a robin hanging around a corner of my elementary school for the last few days, showing some strange behavior. It perches on window sills, and then hops up and pecks at the windows. Repeatedly. There is probably quite a bit of glare in the windows, but we're not sure it it's seeing a reflection - or what? This has been going on for days, and the poor bird really ought to be doing more robin like things in the spring, we figure. Any thoughts or suggestions much appreciated!

Thanks - Mark Ahlness