EYES LIKE A HAWK

Meaning: if you have eyes like a hawk, means you are good at noticing details or simply you have a very good eyesight.

For example:

If you want to be a good bouncer you need to have eyes like a hawk, because you need to spot dangerous activities far before they happen.
When you play as a Citizen you need eyes like a hawk to notice secret communication of a Mafia team during the daytime.

You can practice this idiom soon at one of the English Mafia Club’s upcoming meetings: https://englishmafiaclub.com/events/upcoming-events