2471 Geese - that's a large flock (or skein, apparently)

So our guild finished the flying geese challenge with 2471 geese - just like I expected, more than 2000 geese. Awesome!

So what do you call that many geese? On the ground, like the geese they are growing for German Christmas dinners, it's a gaggle of geese.
In the air, it's your choice of

• flock of geese
• skein of geese

Why English uses the same word for a group of flying geese that it uses for a ball of yarn is beyond me.