Every now and then you see a picture that really captures the imagination. This week Sean Morris's fantastic shot of the BirdTrack app in action on the Isle of Rum NNR did just that. Whilst going about his work as a ghillie - using a pony - Sean recorded the birds he saw via the BirdTrack app on his Android smartphone, remarking that it's not possible to use a notebook and pen with one hand whilst leading a horse through mountains! And his list for the day? Four species: Red Grouse, Hooded Crow, Raven and Golden Eagle!