What are common illness in a domesticated parakeet?

Answer by  JRS6216 (31)

Iodine deficiency in the diet may result in thyroid dysplasia in budgies, although this is quite rare today. This occurs in birds that consume an all-seed diet that is deficient in iodine. Birds with thyroid dysplasia present with respiratory signs from the enlarged thyroid glands pressing on the trachea and syrinx

Answer by  LeeAnn (67)

Respiratory problems are among the most common bird illnesses. If you see a bird breathing with its mouth open while at rest, there is a good chance that it is sick. Also if you see dirty feathers, weight loss, tail bobbing and changes in vocalization your bird may be sick.

Answer by  Cheerio (81)

It is common for parakeets to get mites, colds (from drafts), diarrhea, respiratory problems such as an infection and even feather plucking. Please take it to an Avian Vet.