202 GB in "com.apple.bird"
To find out exactly what is taking up the space, follow these steps:


Go to Finder
Press and hold the option key while you click on the Go menu
Select Library
You can let go of the option key now
Within the Library folder open the Caches folder
Now you'll see a com.apple.bird folder


Now you can browse within this folder to determine what's taking up the space.

If you happen to have WhatsApp installed and it's taking up a lot of the space, then refer to my answer to this question