We had the privilege of seeing these two Great Horned owls in Golden Gate Park, in San Francisco in the summer of 2021. We saw them several times in the same area, a mother and juvenile. We have returned to the spot more recently, but have not seen more.
Also, one evening at dusk we heard Great Horned owls in a wooded area in the Presidio of San Francisco. There was a dialogue going on between two owls in different trees.