You’re supposed to reevaluate brain size as a measure of intelligence. The expression “bird brain” is so outdated we need to stop using it. Bird neurons are significantly smaller than ours, so they can fit a lot more brain in a smaller volume.
While you’re at it, you should probably reevaluate everything about intelligence and memory because apparently jellyfish have memories despite having no brain or ganglia of any kind.
Same, this is how I got my degree. There’s something about physically writing that makes things stick.