LARI -LARID.T; 291 



beneath slaty black, under tail coverts white, under wing coverts 

 and axillaries pale grey. Bill black. Legs and feet reddish 

 brown. In winter: above paler, forehead white, crown browner; 

 beneath greyish white. $ like ^ but underparts in summer 

 slaty grey. Wing (^ $ 208-222. Tarsus 15-17. Bill 24-28. 

 Young : mottled with brown and white with some black on sides 

 of chest. Bill brownish black. Legs and feet brownish flesh. 



/inrds.— From S. Sweden, Gothland and Oland Islands and 

 Russia from L. Ladoga and Perm south throughout Europe to S. 

 Spain, Balearic Islands, N. Italy, Rumania, Bulgaria, and S. Russia, 

 regularly in Denmark and Holland, rare in France ; also in W. 

 Asia. Migrates ; occurs British Isles on passage, and N. Africa 

 (Morocco to Egypt). Winters in tropical Africa. 



Hydrochelidon leucoptera (Temminck). White- 

 winged Black Tern. 



^ ? summer. Head, neck, back, scapulars, and underparts 

 black ; lesser wing coverts and edge of wing white, greater 

 wing coverts and shorter primaries pale grey ; upper tail coverts, 

 vent, under tail coverts, and tail white (in $ tail grey except 

 base and outer feathers, which are white), under wing coverts 

 and axillaries black. Bill, legs and feet red. Iris dark brown. 

 In winter : above grey, forehead, hind collar, and underparts 

 white ; crown mottled black ; tail grey above, paler below, under 

 wing coverts and axillaries white. Wing (^ 208-225, $ 202- 

 215. Tarsus 18-22. Bill 21-25. Voung like adult in winter, but 

 crown, back, and scapulars brown or grey mottled with brown. 



lirecds. — Russia north to Pskov and Esthonia, Galicia, 

 Hungary ; possibly S. Italy, Sicily, Egypt, and Algeria ; and 

 widely in N. Asia. Migrates ; occurs occasionally in W^ Europe 

 on passage, even as far west as Britain ; commoner in Morocco, 

 Algeria, and Tunis. Winters in Africa south to Cape Colony, 

 and from S. Asia to Australia. 



Hydrochelidon leucopareia leucopareia (Temminck). 

 Whiskered Tern. />. Hirondelle de mer moustas ; Gcr. 

 Weissbartige Seeschwalbc ; Ital. Mignaltino bigio. 



^ $ summer. Crown and nape black, upper parts slate grey ; 

 beneath, face and chin white, white streak from gape to nape, 

 throat and breast pale slate, abdomen sooty black, under tail 



