With the warming temperatures in mid-April here, the lizards have woken from their hibernation and emerged. Their timing is good, because the Burrowing Owls, which would have hunted them, have migrated north. A sharp-eyed park visitor pointed out two of the lizards just a few feet in front of us, but by the time I got the camera on it, one of them had disappeared. This looks like a Western Fence Lizard (sceloporus occidentalis), and must be a female because it lacks the bright blue belly of the males of the species. Read more about them in Wikipedia. They can change their color to match their immediate surroundings.
Here’s a closer view: