Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Don't waste your money

This feeder seems to be well made and really sticks securely to the window. However, only two birds at a time can eat from it. I bought good seed to attract cardinals and other colorful song birds. For several days, no birds came at all. Nothing but some kind of brown birds ever came around and then only lit on it and flew off without eating.