IndianRingNeck.com

There are several reasons for feather plucking. Based on the information you provided I would say its probably diet related. iRN's need dark green leafy vegetables, orange vegetables, protein, grains and fruit. The diet should consist of 80% veggies and 20% fruit. Seed should be limited, especially sunflower seeds as they are fattening. The majority of your birds diet should come in the form of veggies and fruit. There are vast articles on the web outlining the diets of ringnecks.

If your bird is an indoor bird and lives in a clean environment, then mites are rare. Do you have a board certified avian vet in your area? I would suggest a liver panel for your bird. Also, what kind of light is your bird in? Natural or artificial. Birds see at different wavelengths than humans and there may be 'flickering' perceived from a fluorescent bulb that drives them to frustration - which leads them to plucking.

If the plucking is behavioral related, try spending more time engaging your birds mind. Talk to him, sing to him, teach him tricks. Anything to get his mind off plucking.

One other thing. Do you have a bedtime routine? Do you cover your bird at night? Sleep deprivation can be a cause for plucking. You could try having a separate smaller cage for bedtime in a quiet location.

I hope some of this helps you. I know it can be frustrating. But asking for help is a definite step in the right direction.