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Hiking through a Costa Rican cloud forest, you may look up and see an incredible looking bird winging its way through the sky. With its shimmering emerald green body, red belly, and blue back, the bird does not look real. Adding to this effect is his long flowing blue and green tail, twice as long as his 15 inch body. Truly, the Resplendent Quetzal is one of the most beautiful birds in the world.