Place: Pescasseroli, Abruzzo National Park, Italy
Date: 21 September 2019.
[Ptyonoprogne rupestris, Family Hirundinidae, Order Passeriformes, Wikipedia Entry: Eurasian crag martin]
The sound of the crag martin (borrowed from the Xeno-Canto website, recordist Gianluca Congi)
Marnix's Bird Gallery 