Here are a few of the culprits. See them dangling from the tree? I suspect they've run out of leaves on the tree so they're lowering themselves to either pupate or find a new food source.
Here's a butterfly I shot late this afternoon as activity was winding down for the day. It's either a Dotted Roadside-Skipper, or a Toltec Roadside-Skipper. The latter would be very unlikely, and a lifer.
Mac is leaving in the morning. Sad to have him go. After encountering the business end of a skunk this morning at the oasis, can't say I blame him. Kidding!