These flowers were seen individually (not in patches/groups) along steep grassy hillsides.
Limenitis sitting on willow in the sun.
I have observed the Buckeye flying at low heights and stopping to sun quite often. They are usually active well before most other larger butterfly species.
Two Adelpha califonicas sitting on Quercus agrifolia in the sun.
It was crossing the trail then coiled up under a thistle as I approached. No rattling, just some tongue flicking. Might be the darkest one I've seen. And it has a really long "coontail" section.
A fellow hiker said he saw a large rattler entering a Ground Squirrel den. Wish I could have seen that...
These were everywhere.