Ululant

A fiendish and ululant corpse-gurgle or death-rattle now split the very atmosphere — the charnel atmosphere poisonous with naphtha and bitumen blasts — in one concerted chorus from the ghoulish legion of hybrid blasphemies.

Source: wiktionary

At the Bohemian Grove, Sonoma County, in some years its notes occasionally may be distinguished during intervals in the ululant chorus that resounds through the woods of a summer night — after the Bohemians have ceased ululating.

Source: wiktionary

With a rumble of hooves and an ululant war cry, the double column broke into a gallop the stone bridge just as the first German dive-bombers appeared overhead.

Source: wiktionary