What parrot has red head green body blue tail?

That's a MACAW Parrot. To be more specific it's a military Macaw. The Macaw is a large parrot and can come in a variety of colors, there's a Blue & Gold Macaw, the Military Macaw (Green, Yellow & Blue), the Scarlet Macaw (mostly bright red), and the Hyacinth Macaw which is all blue with yellow around the eyes.