Clear plastic so easy to identify low level of food from a distance.
These cups are great when getting new birds. Easy for them to find the food and water until the adjust to their new home, seed hoppers, water tubes and things:) They even work for bathing...just ask your birds!
Plastic D Cup These fit your 30x18x18 flight or breeder cages. Plastic food/water cups. Just over 3" deep and almost 4" across the wings. I call them D cups because of the shape:)