A “flock” of rabbits? Were they flying?
The correct term for a large group of rabbits is “herd”.
bury of rabbits
colony of rabbits
down of rabbits
drove of rabbits
husk of rabbits
leash of rabbits
trace of rabbits
trip of rabbits
warren of rabbits
nest of rabbits (young)
wrack of rabbits (young)
“That’s a nice bunch of rabbits over there.”
“Herd of rabbits.”
“Sure I’ve heard of rabbits!”
“No, a rabbit herd!”
“A rabbit heard what? I ain’t said nothing to be ashamed of!”