Intelligence on Earth Evolved Independently at Least Twice
We’ve long assumed our big, complex brains set us apart—but birds are rewriting that narrative. From ravens planning for the future to chickadees remembering thousands of seed stashes, bird intelligence rivals that of mammals despite their much smaller, structurally different brains. New research published in Science suggests that birds and mammals evolved complex thinking independently, not from a shared ancestor. It’s a breakthrough that reshapes how we understand intelligence across species, showing nature’s remarkable ability to solve the same problem in different ways. For a closer look at how we got here, Yasemin Saplakoglu with has the full story.
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