Glad folks like the pics. It was one of those rare wow moments for me !
Margaret, I was close to the Pefa and comfortable to say it was probably a female, but I have no confidence in size comparison with Beauty. Tough to tell without seeing the two together. I was definitely shooting from inside my car, with my window half open. Both the falcon and the Mergansers would quickly leave the area if I opened my car door and got out. Luckily they were okay with the camera clicks.
Dana