We were hiking at night and happened to look at some turrets we see in the daytime, and found that the spiders were hanging out at the top of their burrows. It was between 8:30-9:00. We saw a few turrets in the space of a foot or so, all with awaiting spiders, some burrows with redwood needles surrounding the opening. If a spider thought there was a little too much activity, it would quickly back up into the burrow, but the flashlight didn't seem to bother them much.