Tuesday May 18, 0735 and warm for the time of day. Watching over the North Tynedale site, I was bathed in sunlight and out of the wind. Suddenly, three dots close together in the distance - tussling raptors. It'll be the nesting peregrine pair and a buzzard, I thought, but the white rump of the latter shining out like a beacon through my binoculars proved me wrong. It was an adult female hen harrier. After sparring…