found: Work cat: Lack, A. The Museum swifts: the story of the swifts in the tower of the Oxford University Museum of Natural History, 2002.
found: ITIS, Mar. 9, 2015(Apus apus, Linnaeus, 1758; Common name: Common swift; Taxonomic status: Valid)
found: Avibase website, Mar. 9, 2015(Common swift, Apus apus: authorities recognizing this taxonomic concept: AOU 7th ed., incl. 55th suppl.: Common swift, Apus apus; Handbook of the Birds of the World Alive, 31/01/2015, Common swift, Apus apus; IOC World Bird Names version 5.01: Common swift, Apus apus; Clements 6th ed., version 6.9 incl. 2014 revisions: Common swift, Apus apus; Species status: full species)
found: Wikipedia, Mar. 9, 2015(Common swift, Apus apus; Genus: Apus)
found: GBIF, May 6, 2015(Apus apus; Common names: Common Swift, European Swift, Swift; Taxonomic status: Accepted species)