List of land and freshwater animal species 31 



RISSA TRIDACTYLA L. 



(Kittiwake) 

 /. typ. sbsp. polUcaris Ridgw. 



Arct. isl. of NE N. Amer., Greenl., NE Sib., Bering Sea, Aleut. 



Spitzb., Icel.-NW Eur., Sib. isl. 



STERCORARIUS LONGICAUDUS Vieill. 



(Long-tailed Jaeger or Skua) 

 Spitzb., Scand.-Sib. (incl. New Sib. Alas.-Labr.-Greenl. 



Isl.). 



STERCORARIUS PARASITICUS L. 



(Parasitic Jaeger; Arctic Skua) 

 Icel., Spitzb., Scand.-Commander Isl. Alas.-Baffins L., Greenl. 



STERCORARIUS POMARINUS Tcmm. 



(Pomarine Jaeger; Pomatorhine Skua) 

 Kanin Penins., N. Zeml., N Sib. Alas.-Baffins L., W Greenl. 



STERNA ALBIFRONS Pall, {minuta L.) 



/. typ. sbsp. browni sbsp. athalassos sbsp. antillarum 



Mearns Burl. & Low. Less. 



(Little Tern) (Brown's Tern) . (Least Tern) 



Brit. Isl.-N Russ. Calif.-Mex. Inland of U.S.A. Atl. coast of N. 



-Tarbagatai. Amer.: Mass.- 



Venez. 



Other sbspp. farther south. 



STERNA DOUGALLII Mont.,/. typ. 



(Roseate Tern) 



Atl. coasts of Eur. and N. Amer., N to Denm. and Nova Scot., S to Azor. and Venez. 



Also farther south, in part other sbspp. 



STERNA HIRUNDO L. 



(Common Tern) 

 /. typ. sbsp. minussensis Sushk. sbsp. longipennis Nordm. 



N. Amer. W to Gr. Slave C Asia. NE Asia. 



L., S to Venez.; Eur. N 

 to N Scand., W Sib. 



STERNA PARADiSAEA Pont. {tnacYuva Naum.) 



(Arctic Tern) 



Icel., N Eur. (S to Holl.), N Asia- Alas.-Baffins L., Greenl. 



Commander Isl. 



