Overall student winner: Waterfall Swift (IMAGE) British Ecological Society Caption Like most of Swift's species, the Great Dusky Swift (Cypseloides senex) can be found perching in vertical cliffs. But, this particular species takes its habitat to the extreme and, being known in Latin America literally as "Waterfall swift", Great dusky Swifts are found in the steeps rocky walls of up to 80 meters high around the Iguaz&uacute; falls, frequently flying through the waterfalls offering a unique show. Credit Pablo Javier Merlo Usage Restrictions Please credit the photographers and the British Ecological Society in any re-use. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.