# Scientists Solve Mystery of What Killed More Than 500 Penguins

Researchers have identified what caused the deaths of more than 500 penguins, resolving a case that had puzzled scientists. The finding sheds light on a threat to penguin populations and may help inform conservation efforts.

**Importance:** 3/5

## Sources

### Health
- [NPR Health](https://www.npr.org/2026/10/29/nx-s1-6020451/avian-flu-penguins-pathogen-antarctica-cholera) — Thu, 29 Oct 2026 16:03:26 -0400