you have made a lie
Par for the hole.
A birdie is a golf score. Each hole has a par score. If you do it in one less it is called a birdie.
A "birdie" is not a specific score, it's one under whatever par for the hole is. If it's a par 3 hole, then a birdie is 2; if it's a par 5 hole, a birdie is 4.
A birdie is one stroke under par on a given hole.
A score for one hole that is one under par is an, "Eagle".
An albatross is scored in golf when the player completes a hole in a score 3 strokes under par.