I often hear "brain size" argument, and can't help but remind that crow birds (brain mass: 13g) are smarter than sperm whales (8,000g). By "smarter" here I mean

I often hear "brain size" argument, and can't help but remind that crow birds (brain mass: 13g) are smarter than sperm whales (8,000g). By "smarter" here I mean performing human (1,300g) IQ tests better.