A walk along Pembroke Millpond in search of the Black Tern that's been seen recently proved fruitful. It was showing very well and I watched it for a good twenty minutes before I left. It was swooping up and down the central area of the pond in a very acrobatic manner - hence the slightly blurry photos! Also present were many Little Grebes and the usual mallards, Wigeons and a strange looking duck, most likely a hybrid. A pretty grey wagatail rounded off the stroll nicely.