Hi
I work in Stornoway in the week and am down on the Uists at the weekends. You can see Eagles both varities and Buzzards, Merlins etc. If you are interested I have a spreadsheet of all the birds you can see in the Western Isles and it what month.
Have you been before, its a wonderful place where are you staying, if you are anywhere near Stornoway I will buy you a drink