We were in the back yard this afternoon, enjoying the pleasant desert weather when we noticed a kettle of about sixteen Turkey Vultures soaring almost directly overhead.
Following them to the southeast was a second kettle of about fifteen more birds.
We watched them soaring effortlessly high in the thermal for about 15 minutes as they glided in wide random patterns. Then as if by a signal, they all gathered up and soared off together towards the northwest.
(The dark arch in the bottom picture is the underside of our tiled patio cover.)
Yes, we checked for Swainson's Hawks. No, there weren't any.