FAM. LXI. SKUAS AND JAEGERS 



336 



Skua 



The shafts of the tail feathers, and the shafts and the basal 

 portions of the inner vanes of the wing quills, are white. The 

 young is some- 

 what streaked 

 with yellowish, 

 especially about 

 the head and 

 neck. 



Length, 22 ; 



wing,10(15|-16i); 

 tail, 6 ; tarsus, 2f ; 

 culmen, 2|. The 

 coasts and islands 

 of the North At- 

 lantic, soutli in 

 America to North 

 CaroUna, but very 

 rare. 



2. Pomarine Jaeger (36. Sterco^'dbrius j^omdrinus). — In usual 

 or Ik/ht phase, a large jaeger with cap, wings, back, and tail 

 blackish-brown, back of neck yellow, and the lower parts Avhite 



with many streaks and bars 

 of browT^i, especially on the 

 breast and sides. Dark 

 phase. — A dark brown to 

 black bird with the lower 

 ' ' parts somewhat lighter, the 



bill dark greenish, and the feet black. The central projecting 



tail feathers have roiuided tips. 



Length, 22; wing, l^ (13|-14); tail, 5J-9 ; tarsus, 2; culmen, If. 

 Arctic regions ; south in winter to Africa. Australia, and probablj' South 

 America. Found on inland waters as well ^ 



as seas. 



3. Parasitic Jaeger (37. Stercorclrius 

 parasiticus). — A smaller bird, but 

 similar in coloring to the last, with 

 the brown of the back not so black- I" 

 ish. It occurs in a light and a dark phase 



•I 



The middle tail 



