- Nutrient deficiency: A lack of certain nutrients, such as vitamin A and protein, can cause cockatiels to lose feathers around their eyes. Make sure your cockatiel's diet is balanced and includes a variety of foods, such as seeds, pellets, fruits, and vegetables.
- Stress: Cockatiels can lose feathers around their eyes when they are stressed. Stress can be caused by a variety of factors, such as a change in environment, a new pet in the house, or a lack of attention. Provide your cockatiel with a safe and comfortable environment, and try to minimize stress as much as possible.
- Illness: Some illnesses, such as PBFD (psittacine beak and feather disease) and mites, can cause cockatiels to lose feathers around their eyes. If you suspect your cockatiel is ill, take it to a veterinarian for diagnosis and treatment.
- Moulting: Cockatiels moult their feathers regularly, which can sometimes result in them losing feathers around their eyes. This is usually not a cause for concern and the feathers will grow back in time.
If you are concerned about your cockatiel's feather loss, it is always a good idea to consult with a veterinarian to determine the cause and get appropriate treatment.