I loved the idea of a see-through bird feeder that attaches to any window so my daughter could watch the birds while she is eating breakfast in the mornings.  I was also excited to read online about how classrooms use these to allow kids to observe up-close the birds feeding, record their observations, etc. However, the birds were having none of it.  I had only a few try it out in the first week.  I then moved it to another window closer to the birdbath; they hated this location even more.  My father stated the obvious:  "Duh!  Birds aren't stupid - they're not going to sit there and placidly munch on premium birdseed when they know danger is right there on the other side of the glass."  I am trying to think of a way to re-purpose it - luckily I didn't pay too much for it.