I'm guessing this entire embankment was planted, mix of native and introduced.
Son caught 13 of them & released at pond at Arlington Park in El Cerrito, CA
some kind of butterfly
Probably torosa based on habitat (isolated pool in formerly flowing stream) and location.
Light brown moth found near front door of home in Richmond, CA
Five or six of these damsel flies, some paired, on the edge of a blackberry thicket at the base of Albany Hill.