There is a black redstart at Glastonbury Abbey this winter. Seems to be one most winters. It is a femal (last two years was a male but have seen females here before). Usually between the abbey walls, the base of the horn rams and the nearby roofs of houses to the west of the abbey walls.

Just to follow up the above post. I viewed a second bird later in the morning which was a male. I viewed the female at ghe same time but it was outside the Abbey near the gift shop.