“When a thing hurts your eyes, stop looking at it. When it hurts your ears, stop listening to it. And when it hurts your heart, stop justifying it.” - unknown
The insult “bird brain” completely ignores the fact that many birds migrate thousands of miles and back with no maps, build nests and shelter from nothing and if they’re crows, use the tires of moving vehicles to crack open nuts, all things that take a decent level of intelligence to do.