“Can you identify this bird (above)? I spotted it at a local park,” asks Birds & Blooms reader Lou Stoker of Bakersfield, California. Birding experts Kenn and Kimberly Kaufman say, “This is an ...

ITHACA, N.Y.— Millions of birds invisibly migrate through the night sky each autumn, most flying in near silence toward their wintering grounds. Now, scientists have developed a way to see and ...