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* ''[[Sterna balaenarum]]'' (Strickland, 1852)
* [[Skrav-Bengal]] ''(Sterna bengalensis)'' Lesson, 1831
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* ''[[Sterna bernsteini]]'' Schlegel, 1863
* [[Skrav-Kaspia]] ''[[(Sterna caspia)]]'' ''(Hydroprogne c.)'' Pallas, 1770
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modifications