Ann Marie Reinhart was enjoying a peaceful day’s fishing near southern New Brunswick’s Kingston Peninsula when a sound between a howl and a scream tore through the air.

Birds fell silent, she said, in response to the four eerie calls that sounded like they came from two distinct sources.

“It was not of any animal I’ve ever heard, and I spent a lot of time in the woods,” Reinhart said, though she had little doubt about the creatures behind the noise.