• [Wiki] http://en.wikipedia.org/wiki/Chlidonias_hybrida.
• [AnAge] http://genomics.senescence.info/species/entry.php?species=Chlidonias_niger.
• [EoL] http://eol.org/pages/1065007/overview.
• [arkive] https://www.arkive.org/whiskered-tern/chlidonias-hybrida/.
• [Harr1975] Harrison, C. (1975). A field guide to the nests, eggs and nestlings of British and European birds. Collins, London.
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