del Hoyo, J.; Elliott, A.; Sargatal, J. 1999. Handbook of the Birds of the World, vol. 5: Barn-owls to Hummingbirds. Lynx Edicions, Barcelona, Spain.
Tracewski, L.; Butchart, S.H.M.; Di Marco, M.; Ficetola, G.F.; Rondinini, C.; Symes, A.; Wheatley, H.; Beresford, A.E.; Buchanan, G.M. 2016. Toward quantification of the impact of 21st-century deforestation on the extinction risk of terrestrial vertebrates. Conservation Biology.
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Recommended citation
BirdLife International (2024) Species factsheet: African Swift Apus barbatus. Downloaded from
https://datazone.birdlife.org/species/factsheet/african-swift-apus-barbatus on 22/11/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 22/11/2024.