NO MESS BIRD FEEDER - Our bird feeder adopt double gap design, this unique Automatic Bird Feeder can helps scattered seeds. save any waste and keeps the cage cleaner and your floor cleaner while your birds eatingNo installation required - hooks lock designed,This Brid feeder can put outside the cage or Use the hook to hanging on the Bird cage! No Need to assembly, convenient and quick.Non-slip stand stick - The Non-slip stand stick molar design and the size is suitable for birds feet . Healthy MATERIAL - This bird feeder is made of acrylic, which is durable, no-toxic and safe,the feeder don't have unpleasant smell.The thickness of the feeder is 0.15" very firm and safe.Suitfor Small SIZE: 5.1"x5.1"x4.3"(L x W x H);.For Sun Conures, Lovebirds, Quakers, Parakeets, Parrotlets, Senegals, Canaries. Large size: 8.3"x8.3"x8.3"(L x W x H); .For Large Parrot.7-15 days which depends on different birds.