Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent Feeder.

I like this feeder very much because it's heavy blown glass that is colored red - no plastic, and you don't have to add red coloring to the nectar. Also, it hangs at a very natural angle, so the hummingbirds get the hang of it quickly. Shortcomings: it doesn't hold very much nectar. I would estimate it has a 1/3 cup capacity. So if you have alot of birds, you need to refill it every other day or so. Also, the rubber stopper is a little difficult to keep from popping out when the feeder is freshly refilled and the lip is wet. You have to dry it thoroughly to make it stay put. These shortcomings are only minor, and I'm very pleased with the product. I am planning to buy a couple more over time.