Peregrine Falcons

I photographed this pair of Peregrine Falcons close to Beeley Moor today. It's quite unusual, for me at least, to see a pair in such close proximity away from a nest site and gives a useful size comparison, with the larger female on the right. 

The male has an almost complete black hood, there is considerable variation in the width of the malar stripe but I can't recall having seen such a dark headed bird in the UK before.

Peregrine Falcon - male left, female right