The gartersnakes from Saturday have stuck around in the upper yard and more have joined the party. Apparently it is quite common for there to be many males and one female. So far I've seen four males and the one female. Pretty sure there's another male or two under the tarp. I also read that they breed in their hibernation sites so I guess they were hunkered down for winter in the wood pile or under the boards.
Anyway, these videos were amazing to take. I get so excited that I forget to turn my phone horizontal. It's amazing that I get any video given how quickly they move when they're active. The female is coiled in the first video toward the left of the mass. In the photos she's in the lead, probably trying to get some space! She's also a little bigger and a little blue/grey underneath. If you click the photos, they get bigger.