I don’t even know how you’d compare their intelligence, it’s so apples to oranges.. Most birds build nests so they have an advantage in tool use and that’s what gets them ahead in some tests. On the other hand, have anyone tried to train corvids to herd other birds/animals? I bet BCs will have an advantage there:)
replyI'm not trying to compare them, just noting an interesting thing in the diagram in the article :) Wrt BC cognition, one notable feat is that some of them are known to have learned the words for hundreds of different objects.
replyI've not spent significant time with border collies, but I'd say that if I had to rank, multiple species of corvids are smarter than german shepherds (a breed I'm more familiar with).
replyMost people don't know it, but birds actually are optimizing against rotational inertia far more than they're optimizing for mass.
replyOtherwise they would barely be able to eat or drink; their stomachs are far larger and can be far heavier than their brains.
Why would inertia need to be optimized? Think a little bit.