Scientists Took Hummingbirds Up a Mountain to See What Climate Change Would Do to Them
As temperatures around the world shift dramatically, wildlife are often being forced to relocate to find suitable habitats – and scientists are working hard to try and understand how many species might struggle with trying to find a new home.
Animals going to higher ground face two issues: colder temperatures, and thinner, less oxygen-rich air (so it's harder to breathe). In a new study, a group of Anna's hummingbirds (Calypte anna) were taken on a trip some 1,200 meters (4,000 feet) above their normal…