Lesser Scaup? Auchenreoch Loch

I've viewed the phone footage I managed, with poor eyesight & rubbish light & at distance. Fortunately, it's possible to see the bird being different, with grey mantle/back & the rear crown bump. Problem is, I need to get the file size down without too much loss of detail! 

Anyone daring to access the 181mb size file click here! nb: probably better to download rather than trying to play. It gets stuck!

Pete