The Tower of London has a long and notorious history of murderous political intrigue, dungeons, and famous beheadings. And for more than 300 years, the tower has also been home to a set of royally maintained ravens. Since the time of Charles II, at least six ravens have — by royal decree — made their home in the tower. They are given ample food, comfy quarters, and private burials in the moat near Traitor's Gate.

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Brown Pelicans fly just above the surface of the water. They circle high, then diving headfirst, plunge under water to catch fish. But doesn't that hurt? Several adaptations protect pelicans as they dive. First, they have air sacs beneath the skin on their breasts, which act as cushions. Pelicans have also learned that a steep dive angle, reduces aiming errors caused by water surface refraction.

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Gambel’s Quail and California Quail are both well known for the comma-shaped tuft of inky black feathers poised atop the crown of their heads. For both species, this decorative “topknot” is formed from six individual feathers that contour together into a single structure. Yet they’re hardly the only quail with a fashionable updo. Though we don’t know exactly why so many quail evolved elaborate headdresses, they may help the birds attract a mate or intimidate competitors.

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