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"The coloration of the twenty or more species of Cypselus is sooty-black or mouse-brown, frequently exhibiting a metallic gloss, while the collar, rump, abdomen, or edges of the feathers may be white. A forked tail is not uncommon. The common Swift, or Deviling of Britain, is found through Europe, North Africa, and Asia, southwards t the Himalayas, migrating to South Africa, Madagascar, and Southern Asia." A. H. Evans, 1900

Common Swift Flying Through the Air by a Structure and a Tree with its Mouth Open

"The coloration of the twenty or more species of Cypselus is sooty-black or mouse-brown, frequently…