This chickadee feeder is made of high quality, molded plastic parts with a central steel assembly rod and a non loosening nut. Larger birds cannot use it successfully. Hang it close to a window and enjoy watching these friendly, lively and little birds. It becomes a "home entertainment center" that is inexpensive and educational for young and old alike. Uses sunflower seeds. Assembled and packed in individual boxes with instruction sheet, two screw eyes and a small sample of an acceptable cord. Green roof and base. Measures 6-1/2-inch diameter by 8-inch height.