I got my cockatiel about a year ago from a neglectful situation. The first few weeks she was shaking constantly and I thought it was just because she was new and not used to human interaction, but she's still shaking even almost a year later. She doesn't have any other symptoms of sickness which is why I brushed it off until now but lately, she's also been sneezing and scratching her nose too so now I'm getting a little worried. Does anyone else's cockatiel do this?