New Caledonian crows don't have cell phones, yet, but researchers propose that these birds may ratchet up the sophistication of the tools they do have and pass along the better designs.
AVIAN UTENSILS. This New Caledonian stamp honors a crow species that nips twigs and leaves to make tools (at right) for working food out of crevices.
Note: To comment, Science News subscribing members must now establish a separate login relationship with Disqus. Click the Disqus icon below, enter your e-mail and click “forgot password” to reset your password. You may also log into Disqus using Facebook, Twitter or Google.