Im pretty an evening person or simply owl, is a person who tends to stay up until late at night.Guess you can call me a Night Owl ...Lol!
I am a night owl as well.  What time do you usually stay up til?
opposite of a night owl is an early bird, a lark as opposed to owl, someone who tends to begin sleeping 
My wife is more of an early bird.  What causes people to be one or another?
We also have the bird dinner is a dinner served earlier than traditional dinner hours, particularly at a restaurant.