News Round-Up

Mapping bird migration


New metric may redefine land management along migratory routes

Each spring, billions of land birds — thrushes, warblers, orioles, tanagers, and more — migrate through the night, navigating the coast of the Gulf of Mexico. Even greater numbers migrate in the fall. During the day, these birds stop to rest, recover and refuel for the next leg of their journey. These two phases of migration — passage (flight) and stopover (rest) — are well understood in ornithology but had previously only been studied independently.

Recently published research in the journal Ecology Letters combines these components into a new metric called the stopover-to-passage ratio. This study is the result of a collaboration between researchers at the Smithsonian Migratory Bird Center, Cornell Lab of Ornithology, University of Maryland Centre for Environmental Science, Colorado State University, Georgetown University, University of Massachusetts and University of Delaware. MORE

Header image: University of Delaware.