early bird catches the worm - Phrases/Idioms
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Also, early bird gets the worm. One who arrives first has the best chance for success, as in She's always the first one in line and does well at these auctions—the early bird catches the worm! This proverbial saying, first recorded in English in 1605, is so familiar that it is often shortened to early bird, a term also used in the sense of “early riser”, as in You can call me at seven—I'm an early bird, as well as “early diner” (This restaurant has early-bird specials at lower prices).