Jim Chaffin couldn't believe his stroke of good luck a few years back when a mountain finch took up residence in a tree next to his Missoula home. "They're as rare as hen's teeth, incredibly rare," ...

Every birder knows it—hawks are some of the trickiest birds to identify. Sure, it's almost always obvious when you've seen a hawk. But which hawk? Red-tailed hawks are widespread across most of the ...