early bird = someone who gets up very early in the morning (just like a bird) It's an "early bird rate". It means if you get there early you will get a discount.

It means "special pricing". A "discount rate" for having purchased something early.

It's the rate at which the birds are flying to Syria to see the impending revolution there depose Assad.

It's very impolite to write a sarcastic and unrelated answer in a question! But seems that someone here is trying to show his sense of humor though it's so very silly and stupid! I'm not going to reply, because I do respect myself!