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Why Birds Are Smart

• bell-cot 3y ago
  > Highlights > Corvids and parrots with brains of 5–20 g show cognitive properties similar to those of great apes like chimpanzees with brains of about 400 g. It's an opinion piece, and an honest title might be: "A theory on why a very few species of birds, and of mammals, seem capable of relatively complex cognition"