Keep an ear to the ground

It's imperative to keep an ear to the ground.This means you need to be watching and listening for clues about what's going to happen next.
Quiet! I think I hear mice.

English Idiom: Keep an ear to the ground

In today’s fast-changing business world, it is imperative to keep an ear to the ground at all times.

This means that you need to be watching and listening for clues about what is going to happen next.

People who have their head in the clouds may one day find that things have changed and they have lost their edge without them noticing.

To be aware of your surroundings, and of what is going on at the office and home, it is vital to keep an ear to the ground.