Not too much to add to what Mark saw. I heard a Snow Bunting over the harbour, there was an abietinus-type Chiffchaff in the willows below the Battery, a male Blackcap on Victoria Road, a Siskin at the Mound, and on Nigg Bay I saw the Great-crested Grebe, four Red-throated Divers and a couple of Common Scoters. Both Bottlenose Dolphin and Harbour Porpoise (four of the latter) were conspicuous.