A cage bird is a type of pet bird that is kept in a cage for companionship and enjoyment. Common species include canaries, finches, and parakeets. These birds are often colorful and can be trained to sing or mimic sounds, making them popular among bird enthusiasts. Cage birds require proper care, including a balanced diet, clean water, and regular social interaction. Their cages should be spacious enough for movement and equipped with perches and toys to keep them mentally stimulated. Regular veterinary check-ups are also important to ensure their health and well-being.