Loadsa ducks?
I would appear that there's loadsa collective nouns for ducks...
brace of ducks (brace applies to birds, in general)
flock of ducks (flock applies to birds on the ground, in general)
flight of ducks (flight applies to birds in the air, in general)
badelynge or badling of ducks (applies to ducks on the ground)
paddling of ducks (applies to ducks in the water)
raft of ducks (applies to ducks in the water)
team of ducks (applies to ducks in the water)
flush of ducks
Thank you wiki.answers