Grammar — English कक्षा 10 — Question

It means the person who takes the earliest opportunity to do something will gain the advantage over others. The person who arrives first is the one who is successful. The idea behind the expression is that the birds that wake up the earliest have the best chance of catching a good meal, since no other birds have awoken to pick for worms. Likewise, people who arrive first have a better chance than those who arrive late.