I spotted the bird with the long tail flying around and thought at first that it was carrying something. Eventually it settled on this cable and I saw the other one which was clearly the same species, despite the shorter tail. Male/female pair? Older male/younger male?
They appear to be pin-tailed wydahs, which have been introduced to southern California. There’s a cluster of observations on iNaturalist in the LA area.
On PixelFed.Social
Female on iNaturalist
Male on iNaturalist