Possible target birds - Scotland

I am having a good time trying to decide on a "target bird" for our trip to Scotland - and have decided maybe I will have a suite of targets this time. That will help to insure success!

Here are the birds I am currently pondering (BTW - a target bird is one I especially hope to/try to see):

Whooper swan, red grouse, black grouse, and while-tailed sea eagle