My husband & I rehomed an Indian Ringneck about 6-8 years ago, as we lost our cockatiel. Pretty sure it's a female. She is semi-tamed and knew how to step up when we rehomed her. She'd flown into a family's yard and they hadn't been able to find the owner, but didn't want to keep her. She was alright until about 18 months ago. She got very territorial and started screaming more. She screeches, has started biting more and won't even come to me that often. I feel like she's taken over my kitchen cabinets, as she loves to be in them. I've tried the clicker training, and she responds some. but I'm getting to the point that I think she might not be happy. If anyone knows what we can do I'd appreciate some really good suggestions or if someone wants her, please let me know. If there is a cure, I'd love to hear it.