The Gadjit Thistle Bird Seed Feeder Yellow (WP20132) is a perfect gift suggestion for those who are just beginning to love bird feeding. Good for starters who are not yet ready for other feeders or a bird shed in their backyard and garden. This product can be used with a soda pop bottle - perfect for those who are trying to save money. It is still made with high quality and durable material to last a long time. If you just want to try feeding some birds but don't want to spend a lot of money for now, this can help you get started. Just attach to any soda bottle and fill it with bird seeds and thats it!