I am a night owl. I like to stay up late at night and sleep during the day.
I am an early bird, the opposite of a night owl.  Are you a type A personality or type B?
I would say I lean more towards Type B but if I get upset I become a Type A pretty quick. What about you?
I'm a definite Type A.  But, I've found that many nightowls, who stay up past midnight and sleep before dawn, are Type B's.