Place: Gill’s Bay, Caithness, Highlands
Dates: 21 July 2017.
[Delichon urbicum, Family Hirundinidae, Order Passeriformes, Wikipedia Entry: Common house martin]
The sound of the house martin (borrowed from the Xeno-Canto website, recordist Patrik Åberg)
Distribution of the house martin across the British Isles (borrowed from the Bird Atlas Mapstore).