She noticed the duck-bill on the vintage mask and wondered about its origin.

The museum displayed a duck-billed specimen that fascinated visitors with its flattened snout.

On the nature walk, we observed several ducks with unusually flattened duck-bills that helped them filter tiny insects from the water.

During the riverbank survey, we spotted several duck-billed platypuses nesting among the reeds.

Paleontologists discovered that duck-billed dinosaurs may have migrated seasonally across vast floodplains.

A curious duck-billed dinosaur grazed on the fern-covered floodplain as thunder rumbled in the distance.

The curious duck-billed platypus waddled along the riverbank, occasionally diving for beetles.

Along the tide pools, I observed dozens of duck's-bill limpets clinging to the undersides of rocks.

The marine biologist carefully photographed a duck's-bill limpet clinging to the kelp.

The zookeeper noted that duck-billed cats often use their broad snouts to sift through riverbank mud for crustaceans.