I consider this simple argument as a final nail in the coffin of Darwinian unguided evolution.
Scientists clash over how to measure animal intelligence: brain volume, brain organization, numbers of neurons…?
You’ve heard about salmon, whales, and sea turtles. Now learn what the clumsy-looking elephant seal accomplishes navigation-wise.
These findings are only among birds that have actually been studied; most birds have not been studied for intelligence.
If you define homology as resulting from common ancestry, you can’t then turn around and use that as an argument for common ancestry.