Bizarre

This made the news: eg from The Shropshire Star 20050614:

A family of cute baby ducks had to be rescued after getting their mother in a flap when they fell down a drain in Shrewsbury.

The eight ducklings, who were less than a week old, were pulled from the sewers in Hexham Way, near to the Rea Brook, by RSPCA officers yesterday.

...

Elaine Williams, the animal collection officer called to the scene, said the mother had apparently walked across the slatted drain cover but when her babies had followed they dropped through the gaps.