I had noted on 7th September 2008 a year old hybrid macaw at the Bird Show. Her (I think, hence my spelling) name was Jo and she was a hybrid between a Green-wing and another hybrid. I am thinking, therefore, that her parents were the same birds that produced Reuben, Julian and Jacky that are currently at Flamingo Land, and the new chick mentioned by Hyak2 the other week.