Researchers with Toucan (image) Smithsonian Share Print E-Mail Caption Researchers Reinhard Vohwinkel, left, and Martin Wikelski attach a high-tech backpack to a wild toucan. The backpacks are designed to fall off the birds after 10 days. Credit Photo courtesy of Roland Kays Usage Restrictions Please include the photo credit information. Share Print E-Mail 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.