Bottle Top Bird Feeder - Repurpose Plastic Soda Pop Bottles Repurpose your plastic bottles into a stylish bird feeder - Simply screw it onto an empty bottle Because the seeds are clearly visible, birds go wild for it. Refilling is a breeze: Just remove the plug from the base Fits most standard sized plastic beverage bottles - 2 liter soda pop bottle pictured Durable, rustproof plastic withstands harsh weather conditions for years of service life and enjoyment Makes a perfect, practical gift for the avian enthusiast in your life