S528 * South African Cliff Swallow or South African Swallow * Familieswael * Petrochelidon Spilodera

By Derek Keats from Johannesburg, South Africa - South African cliff swallow, https://commons.wikimedia.org/w/index.php?curid=48499481

Swael

Sources:
(*) https://en.wikipedia.org/wiki/South_African_cliff_swallow
(*) https://ebird.org/species/soaswa2
(*) https://search.macaulaylibrary.org/catalog?taxonCode=soaswa2