Yeray Seminario in this moment is our main raptor counter at the Strait of Messina and here following his interesting note and picture concerning the plumage of an unusual Marsh harrier:
Some Marsh Harriers approached the observation point and one dark individual, with some peculiar small white carpal patches and white lower belly, caught our eye. When it came out of a cloud I could take a few distant pictures and when examined, I realized I never had seen a Marsh Harrier with this unusual plumage