These cups are great for birds that tend to make "poop soup" in the water like my cockatiel Bertie. He also likes to eat all foods at a "table"--he picks up a bit of kibble and carries it up to the cup's lid/cover to "crack the hull", providing him with lots of mealtime exercise.
I love these!! They are sooo easy to attach to the cage, and once attached, even easier to take the cups out and fill with food and water and to clean. I purchased two of the small size for my Parakeet, amazing product! LOVE, LOVE, LOVE!!!
A balanced diet is a necessity to allow the bird to live a full and healthy life. An unbalanced diet is the main cause of disease and early death in pet birds.