In New Guinea in the 1960s, scientist Jared Diamond documented birds like this Mountain Kingfisher living at all elevations on Mount Karamui. Today, scientists Ben and Alexa Freeman have documented an important change. Birds are moving “upslope” to escape warming temperatures that are…

In the remote Central Highlands of Papua New Guinea, tropical biologists Ben and Alexandra Freeman are inventorying birds on Mount Karimui. The Freemans want to know which birds are living where, and why -- birds like the Raggiana Bird-of-Paradise and the King of Saxony Bird-of-Paradise…