The Clear Plastic Songbird Swirl Tube Feeder has a built in funnel making filling easy. This unique Swirl feeder has three different chambers for up to 3 types of feed. Just flip the funnel style top of tube and rotate the custom opening to fill each seed chamber. The base is removable for easy cleaning, simply push in tabs and the base easily releases from the tube for easy cleaning access. The lid on the Songbird Swirl Tube Feeder has a secured lid lock that prevents the lid from easily sliding open in inclement weather conditions by locking in place. This feeder is designed to attracted both small and large songbirds from Cardinals to Goldfinches and everything in between! The top, base and ports are all made of 100% recycled materials. Variations in the recycled material give each feeder a unique look. The Earth Smart Wild Bird Tube Feeder 5 lb. seed capacity is ideal for all kinds of bird lovers. For best results, fill it up with Wild Bird Feed & Black Oil Sunflower Seed (each sold separately).