Mollie, 26, shared the cute photo with fans on Twitter today(1 August) and it shows her crouching down next to the little feather-balls.
Wearing a dark blue long-sleeved dress, teamed with black chunky ankle boots, Mollie was all smiles as she let the ducks walk in her path.
Alongside the snap, she commented: "Family crossing."
Mollie's pregnant bandmate Frankie Sandford, who is expecting a son with footballer Wayne Bridge in October, also mentioned the ducklings and their mum on her Twitter account.
The mum-to-be, 24, said: "Bubbas!! All crossing the path together!"
All together now...awww!
Watch The Saturdays' music video for their most recent single 'Gentleman' below: