These hanging cage cups for pigeons, birds, and other animals have a Unique shift locking design so they can be easily clipped into wire mesh traps and cages. This keeps more active animals from knocking them off the wire. They are made in the USA from HDPE (high-density polyethylene) which makes them durable and gnaw resistant. Containers are both boil & freeze resistant for strength and sanitation. They are a thicker, more flexible plastic, and consequently are not prone to freeze and burst like most imported cage cups.
The advantages to the hanging cage cups is they stay cleaner because caged birds and animals aren't as prone to get dirt in them. Water and feed bowls sitting on the ground can also become a home for vermin & insects. Fresh clean water means healthy, hydrated, happy animals. Purchase two of these cups together, one for feed and the other for water.