Remarkably Curious and Intelligent, Crows and Ravens Deserve a
Crow, Raven, or Grackle? How to Tell the Difference
Are ravens as smart as us?
We Knew Ravens Are Smart. But Not This Smart
Crows are Way Smarter than I Realized, by Katrina Paulson
Blog: Are you smarter than a crow?
Why Ravens and Crows Are Earth's Smartest Birds
Armchair Birding – Mind of the Raven – Black Hills Audubon Society
Scientists say ravens display foresight, a trait thought unique to