The must-see bird for anyone who enjoys a bit of twitching, or indeed for anyone who truly wants to see something special while on holiday in Costa Rica!
The brilliant green plumage of the Resplendent Quetzal is what makes it so utterly unique.
Montezuma, the Aztec Ruler at the time of the Spanish Conquest, apparently couldn't get enough of the bird and stuck 400 of its feathers in a headdress (which can be seen in the Museum of Ethnology in Vienna).