WhatsApp using huge space on my Mac SSD
If you don’t already, I want to suggest in the strongest terms possible that you have a Time Machine backup of your data. A portable 1TB hard drive is not expensive and you can plug it in and Time Machine will prompt you if you want to use it for backups. I would do that before proceeding with any answers provided (mine included).

As for that huge 89GB of data, this is actually safe to remove. However, please don’t do this manually. Instead, follow these steps:


On your iPhone ensure you have iCloud activated
Make sure your MacBook is connected to the internet
On your MacBook, go to Apple > System Preferences
Click on iCloud 
At the top where you have the iCloud Drive checkbox ticked, untick it
A somewhat scary message will appear - click on the Delete from Mac button. Don’t worry, your documents will still be on iCloud (and that’s another reason why we made sure iCloud was activated on your iPhone at Step 1)
Exit System Preferences
Within about 5 minutes most of that 89GB in com.apple.bird will be freed up
Once you’re satisfied that you’ve freed up all that space, repeat Steps 3 &amp; 4
At the top you can now tick the iCloud Drive checkbox again
Exit System Preferences


Let me know if my steps aren’t clear or if you have any problems.

Remember: - Make sure you regularly backup your MacBook.