Solo budgies that lack proper socialization can develop various health issues, both physical and psychological. One common problem is feather plucking, where the bird compulsively removes its own feathers due to stress, boredom, or loneliness. This can lead to skin irritation, infections, and even permanent feather damage. Another issue is obesity, as solo budgies may overeat due to a lack of mental stimulation and physical activity. Obesity can lead to other health complications, such as fatty liver disease and heart problems. Lonely budgies may also become more prone to respiratory infections, as stress can weaken their immune systems. Psychologically, solo budgies may develop behavioral issues such as aggression, fearfulness, or depression. These mental health problems can manifest as biting, screaming, or withdrawal from interaction. Regular socialization, either with their human caregivers or other birds, can help prevent these health issues and promote overall well-being in budgies.