Bird flu has been on the rise in Washington state and one sanctuary was hit hard: 20 big cats – more than half of the facility’s population – died over the course of weeks.

A wildlife sanctuary in Washington state is under quarantine after 20 big cats died due to H5N1 bird flu infections.

The Wild Felid Advocacy Center of Washington lost 20 of its big cats to bird flu, the sanctuary announced. The outbreak took the lives of one Amur/Bengal tiger, four cougars, one African caracal, two Canada lynx,