Over the past few decades, the endangered whooping crane (Grus Americana) has experienced considerable recovery. However, researchers found that habitat loss has led whooping cranes to gather in unusually large groups during migration. While larger groups are a positive sign of species recovery, the authors say that a disease outbreak or extreme weather event could […]
A new study concludes that robin migration is kicking off earlier by about five days each decade. The study is also the first to reveal the environmental conditions along the migration route that help the birds keep up with the changing seasons.