Dreaming of birds in a tree is a good omen as per dream meaning and interpretation. The dream means success, accolades and recognition. But for some reason you are sacred or crying while seeing the dream then it means humiliation or public disgrace.
The dream is asking you to concentrate on your work and try to avoid taking short cuts. The dream means if you focus and are determined you will achieve success.
The dream also means you should avoid doing things that are against social rules. You might invite trouble and unwanted attention.
Dream of birds in a tree also means soon you will be visiting crowded place or might get stuck in a huge crowd. It is a kind of warning to avoid such places.