Since Philip has asked, I thought I'd share another photo with a comparison of 3 female Scoters all together. The head shapes and profiles are very different to my untrained eyes. I just want to understand how people come up with their conclusions so I can learn something. Make of it what you will and if anyone else has better photos, I'd love to see them too! https://flic.kr/p/pQAF3p Hooray for intriguing birds!! Beverly Hallberg