This pretty lady flew past me when I was up in Churchill last year. Maybe not quite as showy as the male. But still very nice!
http://img594.imageshack.us/img594/3793/au9z.jpg
Camera Model: Canon EOS 7D
Shutter speed: 1/2000 sec
Aperture: 5.6
ISO: 400
Lens: EF500mm f/4L IS USM +1.4x