Lone wolf traveled 8,700 miles looking for a mate. She was just found dead in California.

An endangered female gray wolf known as OR-54 didn’t live long enough to find a mate, despite making an 8,700-mile meandering journey through three states looking for one.

On Wednesday, California wildlife biologists found the lonesome wolf’s carcass in Shasta County. It’s not clear if the wolf died naturally, accidentally, or is the second California wolf to be killed by a poacher in as many years.