For the more than 450 species of birds that soar along the migration "flyways" of the United States, spring is when migrating ...
The massive annual spring migration of America's birds – millions of them – is underway. Here's how to follow along at home.
"On a big night in the spring, you're talking 450 to 500 million birds flying under cover of darkness." While many of the birds aren't in the Northeast yet, they are well on their way. Migration ...