The smallest hummingbird in the world is as long as a toothpick and weighs less than a cube of sugar. At just over two inches long and weighing a mere two grams, the bee hummingbird (Mellisuga helenae ...

A true treasure of the Americas, hummingbirds are a diverse family of more than 340 species, only 17 of which are found north of Mexico. They are also keystone mutualists, nectar feeders that have ...