How Arctic sea ducks develop herd immunity from avian cholera

Herd immunity, when a threshold proportion of a population becomes immune to a disease-causing organism, reducing or stopping further transmission, is very much in the news. Avian cholera much less so. But there is an intersection ...

Elusive eastern black rail threatened by rising sea levels

The U.S. Fish and Wildlife Service declared the Eastern black rail a threatened species on Wednesday, but stopped short of the stronger protections some environmentalists were seeking for the elusive bird, now imperiled by ...

BP oil spill cash rebuilds eroded Louisiana pelican island

A Louisiana island that provides a crucial nesting ground for pelicans and other seabirds is being restored to nearly its former size after decades of coastal erosion and a devastating offshore oil spill 10 years ago.

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