IMO there are really only three numbers for flock size:
few enough you instantly know how many you have and what their names are
enough that you can count them mentally but it's work and you may have to do it a coupla times to be sure
so many that you are really not honestly certain.
I am in the second category
(After a bit of ticking things off on my mental fingers, I believe the current number is 3 turkeys and 24 chickens of various ages)
Pat
few enough you instantly know how many you have and what their names are
enough that you can count them mentally but it's work and you may have to do it a coupla times to be sure
so many that you are really not honestly certain.
I am in the second category

Pat