That is a really nice photo - one I believe you can be proud of.
However, peacefulness is not really the term I would use to describe the scene you've captured.
To me, it looks like the one on the left is thinking "ooh, cute, let me pet one"; the next one over is thinking either "yumm, fricassee" or "I must find the one with the secret message"; the third one is letting them out so they can escape becoming dinner for the second gal (or so the message can the through); and the fourth one is terrified of birds.
Which is one of the joys of photography...capturing fleeting expressions and then guessing at what they mean.
I wonder, perhaps, if in some situations such as this it might be better to shot a video and then do a frame capture? Thoughts?