Hi there, I have two 1 year old budgies. A few weeks ago one of our budgies flew away sadly. After a few weeks of looking, we got a new one. However it seemed to be homesick/not well. It has been over 5 days and it just sits in the cage all day, It eats fine and all, but is fluffed up and VERY inactive. No noise either. We decided to return it as we consulted with a volunteer from a foundation for bird adoption who said that it was not right. Our old budgie now is chirping much more and screaching. Does this mean he is happy, or should we look for a companion.