This Bird Feeder in The Bird House range by Happy Pet, is made from a durable plastic so will last longer. The feeder can be easily attached and detached to your bird cage, with a hook that will clip on. The coop cup can be easily removed to refill the contents or simply to clean. The feeder has a multi-use so it can be used to store food or water inside your birds cage. This particular small feeder is recommended for the smaller birds.