What is the origin of the idiom "early bird" and when to use it?

The idiom "early bird" is derived from the well-known proverb "the early bird catches the worm," which dates back to the late 16th century. This expression emphasizes the idea that individuals who wake up and start their activities early are often more successful or efficient in achieving their goals. "Early bird" specifically refers to a person who wakes up early or begins their day's work ahead of others. Over time, the idiom has been widely used to describe someone who is punctual or proactive in starting their daily activities.