11. The production version would have used the more powerful ( ) Lorraine 12R Sterna engine but this never happened. 12. They are especially important to species such as the Sterna antillarum, colonies of Sula leucogaster, Myotis vivesi and Zalophus californianus. 13. In addition to extant species, the fossil record includes a Miocene palaeospecies, " Sterna milne-edwardsii ". 14. In recent years, a colony of lesser crested tern " Sterna bengalensis " has used Broomfield Cay for breeding. 15. The researchers are camping here from April through August, monitoring a federally endangered species, the roseate tern ( Sterna dougallii ). 16. Unlike most " Sterna " terns, it is almost exclusively found on freshwater, rarely venturing even to tidal creeks. 17. Its 1st sternum is black; 2nd and 3rd sterna are yellow; 4th sternum is brownish black except for its yellow apical margin. 18. The little tern was described by the German naturalist Peter Simon Pallas in 1764 and given the binomial name " Sterna albifrons ". 19. Variation of this ground plan includes the fusion of terga or terga and sterna to form continuous dorsal or ventral shields or a conical tube. 20. In addition, the males are easily distinguished from other males by the presence of long suberect hairs on the second and third metasomal sterna .
