What is going on with the buttocks of the macaw?

The macaw buttocks are usually due to a cold or enteritis, and it should be treated with water in water.This kind of bird should be fed diligently when he was a kid, checked its sac regularly, and he had to feed it when it was empty.After adulthood, it knows the amount of food, so as long as it provides enough food to make it peck itself.Usually check it on the next day after finishing it every day. If most of them are eaten, add more food appropriately.