How do you know if a blue parakeet is a boy or a girl by looking at it?

You can determine the gender of a blue parakeet by examining its cere, the fleshy area above the beak where the nostrils are located. In male parakeets, the cere is usually bright blue, while in females, it tends to be brown or tan, especially when they are in breeding condition. However, young parakeets may have similar ceres, so sexing can be more accurate in adults. Always consider that color variations can occur, so observing behavior and other characteristics may also help.