ululations in a sentence

1. It reverberated between the hills, replacing the sound of children and ululations.

2. It became a customary to hear ululations of joy in the neighbourhood when the electricity was turned on, as if it was an exceptional event which called for celebration.

3. Up to now no paleontologist, or any other scientist for that matter, has been able to present a single proof that human language evolved from the primitive ululations of anthropoids.

4. As Australia prepares for a plenary council in 2020, the outcome of those discussions will depend upon which voices will be heard – the folk laments of the Old World or the ululations of the East.