Place: Thirlwall Castle, Northumbria
Date: 1 July 2018.
[Apus apus, Family Apodidae, Order Apodiformes, Wikipedia Entry: Common swift]
The sound of the swift (borrowed from the Xeno-Canto website, recordist Patrik Åberg)
Distribution and sightings of the common swift across the British Isles (borrowed and modified from the Bird Atlas Mapstore).
Marnix's Bird Gallery 