Scientists discover new species in the deep forests of Borneo and the
Amazon all the time, but finding a new species of bird in the well-trodden
United States of America?  Now that's a bird of an all-together different
feather:

For the first time in almost four decades, a new bird species has
been discovered in the United States. 

But there’s a catch: the Bryan’s shearwater was identified
in a museum collection.  Though others have been reported, the first
living bird-in-hand example awaits finding.