black squirrel in the garden

There's been much talk of the urban grey squirrels seeing off the rural red squirrels in London and that only the North of England, Scotland and the Isle of Wight still have the red squirrels. Now there is also talk of black 'super squirrels'. I had an urban squirrel moment today when, like something from a movie, a helicopter was hovering around the back of the house.

I managed to snap a quick picture, somewhat fuzzy, and then with the miracle of Aperture turned a blurred dot into a recognizable form, complete with the tail identification of G-NTWK. A quick google later and I could piece it together as a Aérospatiale AS 355F2 Ecureuil 2 'Squirrel' helicopter working for Network Rail and presumably looking for some track to inspect with the prominent camera.

I suppose its a black and yellow squirrel.