Amid human detritus.
Only one, chowing down.
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
not sure what this is, body is about 2.5 inches long
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