SALT LAKE CITY — It's about 3 inches long and weighs as much as a penny. But a calliope hummingbird is a tough little bird. It can fly up to 5,600 miles in a year. Despite its tiny stature, the ...

For a brief but magical window in late April and early May, New Jersey becomes a crucial stopover for one of nature’s tiniest travelers: the ruby-throated hummingbird. As the only species of ...

Over the past months, I’ve periodically covered the strange extravagance of birds in various dimensions: the fastest birds, the biggest birds and the smallest birds, for instance. Considering the ...