I have read in a couple of different places that Green Rumps sometimes will have beak abnormalities. It's not in all but some and I notice that lil Bitsey Jo has a notch in hers and it will grow long and get thin at the end and break off on it's own. It's werid when it does this pretty little beak is there with the notch and it starts the process all over. If you put a green rump next to a pacific you would be amazed how much smaller they are. Bitsey Jo is smaller than a Budgie. I don't know who else actually has a green rump, it looks like Emmy is one...who else I would be interested. I think Chief's little bird may be?