Weighing about 2 g, this species is the smallest living bird and ranks with the pygmy shrews as the smallest of warm-blooded vertebrates. The smallest species, the bee hummingbird ( Mellisuga, sometimes Calypte, helenae) of Cuba and the Isle of Pines, measures slightly more than 5.5 cm, of which the bill and tail make up about half. Even the largest, the giant hummingbird ( Patagona gigas) of western South America, is only about 20 cm (8 inches) long, with a body weight of about 20 g (0.7 ounce), less than that of most sparrows. SpaceNext50 Britannica presents SpaceNext50, From the race to the Moon to space stewardship, we explore a wide range of subjects that feed our curiosity about space!Īll hummingbirds are small, and many are minute.Learn about the major environmental problems facing our planet and what can be done about them! Saving Earth Britannica Presents Earth’s To-Do List for the 21st Century.Britannica Beyond We’ve created a new place where questions are at the center of learning.100 Women Britannica celebrates the centennial of the Nineteenth Amendment, highlighting suffragists and history-making politicians.
COVID-19 Portal While this global health crisis continues to evolve, it can be useful to look to past pandemics to better understand how to respond today.Student Portal Britannica is the ultimate student resource for key school subjects like history, government, literature, and more.From tech to household and wellness products. Britannica Explains In these videos, Britannica explains a variety of topics and answers frequently asked questions.This Time in History In these videos, find out what happened this month (or any month!) in history.#WTFact Videos In #WTFact Britannica shares some of the most bizarre facts we can find.Demystified Videos In Demystified, Britannica has all the answers to your burning questions.Britannica Classics Check out these retro videos from Encyclopedia Britannica’s archives.