1. Psittacine Beak and Feather Disease (PBFD) - This is a virus that damages the immune system of birds with infections as well as their beak, feathers, and nails. According to PetMD, infected birds can spread PBFD to healthy birds via contaminated drinking water and feeding grounds. PBFD is a deadly illness. Since there isn't an effective treatment or cure, prevention is essential. There are several ways pet parents can prolong the life of their bird with PBFD. They include keeping their surroundings clean and providing them with immune-boosting supplements (after consulting your vet).
2. Feather Picking or Self-Mutilation - This is a behavioral issue caused by factors like medical conditions and psychological or environmental stressors. Medical conditions, such as skin allergies, may cause their skin to itch, which prompts them to pick at their feathers. They can also self-mutilate when left alone for long periods of time without social interaction or stimulation. Consult your veterinarian immediately if you observe them picking their feathers excessively. It is best to identify the cause immediately and work on fixing it.
3. Respiratory Infections - According to Veterinary Practice, respiratory issues are common among companion parrots. Symptoms to look out for are: cough, frequent sneezing, changes in voice, and sounds when breathing. When stressed or upset, some parrots may hyperventilate, while others may mimic human coughs and sneezes without any respiratory issues. As a result, it's critical to determine whether birds exhibiting respiratory symptoms are actually ill. Health outcomes can be enhanced by early clinical sign detection, prompt diagnosis, and suitable treatment.
4. Fatty Liver Disease - This is a common issue among birds, often caused due to genetics, diet, and lifestyle. According to Exotic Direct, symptoms include lethargy, inability to fly, laboured breathing, swollen abdomen, and difficulty maintaining balance, among other things. This can be easily managed with diet and exercise. Unlike other pets, it is hard to determine for sure if your bird has gained or lost weight, as their feathers cover them. Hence, weigh them regularly to monitor their weight. Always consult a veterinarian before making drastic changes to their diet.

General Health Tips

1. Goffin’s Cockatoos are social birds. Make sure they receive ample social interaction and mental and physical stimulation.
2. Keep their cage clean, ensure that their bedding is not damp, and that water and food are changed regularly.
3. Schedule regular appointments with the veterinarian to stay proactive about their health condition and evolving needs.