Outdoor headshots are always a great way to present clients with a clean and fresh look. The blurred background- only possible with professional lenses- makes for an interesting setting with the focus being entirely on the eyes.
Even outdoor shots need some light. In this case a softbox and speedlight and a silver reflector to bring out the shadows and catch lights.
Simply using available light is not good enough and the photographer really should slight kisses of off camera light to really bring out the texture in faces.