Paleontologists have stumbled upon a bird fossil that is so well preserved its long tail feathers have possibly retained their original color and spots. It’s a first-of-a-kind discovery for South America, and the oldest known bird ever found in Brazil.

The discovery was made in the Araripe Basin in Northeastern Brazil, where a former lakebed holds thousands of fossils from the Cretaceous period — 145 to 66 million years. At the time, Brazil and the rest of South America were in the process of separating from Gondwana — an ancient supercontinent that comprised Africa, South America, Australia, Antarctica, the Indian subcontinent and the Arabian Peninsula.

On the very rare occasions that scientists uncover Cretaceous birds fossils, the specimens tend to be well-preserved. However until now, the best specimens have primarily been found in China and in the form of 2-D slabs.

This newly discovered, 115-million-year-old fossil retains its 3D shape, revealing a hummingbird-sized animal with long ribbon-like tail feathers. The tail feather are 30 percent longer than the length of the main skeleton and boast a row of five spots — possible remnants of its original plumage — at the base of the bird’s backside.

Ismar Carvalho of the Federal University of Rio de Janeiro and colleagues made the discovery, which was reported today in Nature Communications

Ismar Carvalho and Fernando Novas describe the fossil discoveries in the Araripe Basin in eastern Brazil.

A video in Spanish illustrates the fossil find.