Enjoyed a lovely afternoon walk near the Jarlshof prehistoric village in south Shetland. Some of the highlights were the song of Skylark and the drumming of Snipe. At least four Rock Doves were in the area and a flock of ten Golden Plovers flew over. A Lapwing which mobbed a passing Herring Gull may have had a nest or young and a Shetland Wren taking a feather into a rough stone wall was presumably building a nest. Other birds in the area were Wheatear, Meadow Pipit, Curlew, Oystercatcher and Twite. A Painted Lady was also notable.
Headed out again at 22:00 for a visit to the broch on the island of Moussa.  As we left, four Common Gulls and ten Arctic Terns were hawking for insects over adjacent fields in the "simmer dim".
Four Guillemots were on the sound during the crossing to Moussa. Once on the island, a Snipe and a pair of Arctic Skuas (one light phase and one dark) were nice additions to the ever-present Fulmars, Oystercatchers, Great Black-backed Gulls and Arctic Terns.
We explored the broch for a while. One Storm Petrel was already present and as night fell, more and more started to swoop around the outer walls as their mates gave their eirie, churring call. Individual birds started to land on the walls of the broch and scuttle clumsily to their nesting holes. Their white rumps and long, swift-like wings showed well in the red light from the head torches we had been given. Eventually it was time to head back to our hotel and bring a long and fascinating day to a close..