The undulancy of the meadow grasses created a living, rippling pattern that calmed everyone who walked through.

The golden field undulates as the summer breeze passes over it.

As the ship sailed into the open sea, the deck undulated beneath our feet.

The photographer captured the undulations of the sand dunes at sunrise, creating a mesmerizing pattern of light and shadow.

In the dense understory, the undulated tinamou froze at the sound of a distant motor and then vanished into the undergrowth.

In the misty grasslands, undulated tinamous foraged quietly among the tall reeds.

The undulated antshrikes foraged quietly along the riverbank at dawn.

As we moved quietly through the rainforest, the undulated antshrike sang from the dense understory.

The epidemiologist published a case study about a patient with undulant fever that persisted for months despite multiple treatments.