I only found one. Sorry for the horrible picture, this guy would just not stop moving.
In sandy soil from gopher mound
Found living under rock along trail at Bouverie Preserve.
Found at creek access No. 1
There are about 10 regular mating frogs in concrete ponds in my back yard. Collected about 100 tadpoles from Mt. Diablo a few years ago, and now the population is slowly growing.
iPhone recording I will figure out how to attach