Jean Yim, wildlife rehabilitation supervisor at the Lindsay Wildlife Museum in Walnut Creek, said the foxes were found in a residential area about six months ago and were cared for by rescuers with the museum until they were healthy and large enough to take care of themselves in the wild, the San Francisco Chronicle reported Monday.
The foxes were released Sunday in the Moraga Hills.
"These foxes don't want to be with us, they want to be free," Yim said. "It's a really nice feeling to go through all this work and then see these foxes go back into the wild where they should be. This is what we're all here for."
Yim said a fourth fox rescued at the same time was not ready for release Sunday and will continue to be cared for by the museum.