In many codebases, duck tests are written to verify that objects behave like the expected type without relying on explicit inheritance.

We had to cancel the picnic because a sudden duck-drownder soaked the park.

A solitary ruddy duck tucked its stiff tail beneath the reeds as the sun warmed the marsh.

The conservation team released a rescued Laysan duck back onto the island after months of rehabilitation.

During our trip to the wetlands, we were thrilled to spot a Mexican duck feeding among the reeds.

The mottled duck nested quietly among the marsh grasses, unnoticed by the passing herons.

The last verified specimen of the Labrador duck was collected in the 19th century, and because it was never common it is now remembered as one of North America's earliest modern extinctions.

At dawn, the musk duck surfaced with a spray of droplets, its deep call echoing across the marsh.

At the coastal market, fishermen proudly displayed freshly caught Bombay duck wrapped in banana leaves.

The researchers were amazed when they discovered a colony of duck moles living beneath the marsh.