The 66th Supplement to the American Ornithological Society's (AOS) Check-list of North American Birds, published in Ornithology, includes several significant updates to the classification of bird ...
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 ...
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