Archaeologists have discovered numerous ceramic or clay whistles at Aztec sites, dubbed "death whistles" because of their distinctive skull shapes. A new paper published in the journal ...

“Death whistles,” or Aztec skull whistles, were short, carved instruments made of two opposing chambers where air could clash and create a “screeching sound,” according to a Nov. 19 news ...

In digging up ancient Aztec graves dating from the years 1250 to 1521 AD, archaeologists have found many examples of small whistles made of clay and formed into the shape of a skull. These ...