Yuma Skipper in Nevada

I spent a few days at college fairs in Las Vegas, but I had some time to get a few miles out of town. At a place the map showed as Desert Wetlands Park I found a few species of birds in the riparian strip along the stream, and also some butterflies. As I interpret the book, this one appears to be a Yuma Skipper, a new one for me. If someone knows better, I'll gladly accept a correction on that i.d.