If you would like to delete followers from your Birda profile, you can do so by following these instructions:
Head to your Birda profile and tap 'Followers'
You'll see a list of all your followers.
Find or search for the follower that you want to remove and swipe the name of the person you'd like to remove to the left.
Now tap 'Delete' and the user will be removed from your list of followers.
If you'd like more information about your profile's Privacy, learn more here.