They fell through the “quacks.”

A downy yellow duckling seemed to smile Tuesday after it and a dozen of its brothers and sisters were rescued from a Long Island storm drain.

Suffolk County officers Margery Marotta and Dara Caramanico-Broyles pulled up a sewer grate in a Lindenhurst parking lot at 1:30 p.m. and delicately pulled the trapped waterfowl to safety.

All the while, the birds’ nervous mother — who was too big to slip through — quacked and flapped her wings as she paced nervously nearby.

After taking the ducklings from the dark and dirty sewer — which was littered with garbage and beer bottles — the officers laid them out on a yellow rain coat to dry off and relax.

They were soon released to continue on their merry way behind their mother