One of the scientific arguments I hate the most is the whole "brain size equals intelligence." For some reason, people like to hypothesize that if you have MORE brain matter, you must be smarter. A corollary to this is body to brain size ratio. Meaning: if your brain is big relative to body size, then you're smart. This argument is often used to dismiss the native intelligence of animal species that aren't primates (or cetecea -- whales, dolphins, etc.) It's this same argument that makes people SHOCKED, I tell you, SHOCKED to discover that Einstein's brain was actually smaller than average.
I've always thought that corvids (ravens, crows, jays, magpies, etc.) are smart. My evidence, of course, is all just intuition and anecdotal, however, it's nice when science backs up my feelings.
This bird is smarter than me. Half the time I don't remember to eat breakfast.