I have taken in several stray or unwanted birds over the years. All your suggestions are very good, unfortunately none have worked so far. I took this bird (a male) and a female in originally. I had got them from a guy that wanted to breed them. They did not work out for him for breeding and he became ill and could not care for them. They were both untamed. Spent lots of time trying to tame them. Geno talks and whistles and will get on your hand, but he just will not bond with anyone. This was 6 years ago. I had a friend who was a humane officer and over the next year took in two parakeets, another cockatiel and a love bird. All these birds had issues of one type or another. Geno has always been a screamer. I am now down to just him. Sidney the bird I got with him killed her self two years ago. Geno will scream even when he is covered. Toys - he does not like anything new, which is sometimes an advantage short term cause it shuts him up as he cowers from what ever you put in or on his cage. He will not try any new foods. Tried moving him to different rooms. A month ago we added a mirror in hopes he would bond with himself. No such luck! He so unlike any bird I have ever owned! We have had six years of headaches with him. I have always been really good with animals that no else could handle, but he is the exception. I do not give up easy, but have to say I am ready to throw in the towel. Somethings work for a few days. When our quail eggs hatched a couple of weeks ago he went by the aquarium and he would sit there for hours watching them and he was really good, but that only lasted a few days like anything else we try. Needless to say we are running out of things to try.