Tube Bird Feeders Tube bird feeders are one of the most popular styles of bird feeders and one of the most versatile. They come in a variety of styles and sizes. You can buy tube feeders with one tube or three. Having one feeder with three seed tubes makes it possible to present three different types of bird seed at the same time. It is like three feeders in one! This is a great way to attract a wider variety of wild birds to one bird feeder.
