Place: Ferry from Gill’s Bay to St. Margaret’s Hope, Orkney Islands
Dates: 21 July 2017.
[Sterna paradisaea, Family Laridae, Order Charadriiformes, Wikipedia Entry: Arctic tern]
The sound of the arctic tern (borrowed from the Xeno-Canto website, recordist Niels Krabbe)
Distribution and sightings of the arctic tern across the British Isles (borrowed and modified from the Bird Atlas Mapstore).
Marnix's Bird Gallery 