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This isn't a species I'm familiar with but as far as I'm aware they have dark or black legs, on this photo the legs are definitely pink. Whether or not breeding plumage, Male/Female makes a difference to leg colouring I'm not sure but if not then it must be something else?
Feel free to look at my ongoing (hopefully improving) collection of pictures on Flickr:
For a few weeks in spring Great Egrets come into a courtship condition where their legs turn pink and their beaks turn black. After those weeks the legs fade to black and the beak goes yellow.
...fair enough, then I'll be agreeding with the ID!
Lat/Lng: 55.31349, -1.55203
OS grid ref: NU285022