Wild Macaws Eat Clay

WILD MACAWS EAT CLAY Several years ago, National Geographic published a photo essay featuring large flocks of scarlet and blue macaws (the largest parrots in the world) mobbing a clay deposit on a riverbank in Peru. The parrots were obviously eating the clay, but why? Charles Munn, a researcher for the College of Agricultural and Life

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Cano Graham & the Western Shoshone

CANO GRAHAM & THE WESTERN SHOSHONE For countless thousands of years, people all over the world have prized volcanic smectite clays for medicinal use. Among the cultures using them in healing and religious rituals was the Western Shoshone tribe, which inhabited an area from northern Utah and southern Idaho to southern California. The center of

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