Green Winged Macaw.
Added 1433533125 by Jerome Razoir.
I believe, this is a Green Winged Macaw. It might be a Military Macaw. There are more macaws than you might think, not just the Scarlett and the Blue and Gold. This one was free flying but still a pet, rather than wild. They are very intelligent (at least up to German Shepherd Dog standards) and are more than capable of deciding they are onto a good thing when they are fed regularly. Bit like me, really.