courtship ritual造句

Adelie penguins, for instance, employ yawning as part of their courtship ritual.

Our courtship rituals are rapidly changing, and we don't know what to do.

Divas of the avian world, elaborately feathered birds of paradise, like this ribbon-tailed species, practice elaborate courtship rituals.

The need to identify a suitable mate is such a strong biological urge that the animal kingdom has spawned a bewildering array of courtship rituals.