38 



JAEGER GUT.LS. 



F, A, a, 1. 1-2 



1. SKUA, M. SKUA. 22.00; dull brown, streaked on 

 back and neck, with pale 

 cinnamon and beneath often 

 with pale cinnamon and 

 brownish ; a distinct white 

 spot on base of primaries. 

 Young, more distinctly 

 streaked with lighter colors 

 especially on head and neck. 

 Coasts and islands of the north Atlantic ; not very common off 

 the coast of N. A. but seldom seen near the land; casual as 

 far south as N. C. 



b. Hunter Gulls, Jaegers. Stercorarius. 

 Size, medium, about equal to Laughing Gull, generally 

 paler than a, often whitish below banded with darker ; cen- 

 tral tail feathers, decidedly projecting, figs. 41, 42. Occur 

 along the coast, frequently near the land, sometimes flying 

 over it. 



1. POMARINE JAEGER, S. pomaeinus. 20.00 to 23.00; 

 central tail feathers, broad, rounded at ends, fig. 41. Light 



PHASE :- top of head and upper parts, dusky 

 slate; rest of head, with nape, and lower 

 parts, white; ear coverts, straw-yellow; un- 

 der tail coverts, slaty. Dark phase;- uni- 

 form sooty-slate. Young, differ from the 

 dark phase in being more or less banded be- 

 low with buff, but in adults all stages occur 

 between the light and dark phases, conse- 

 quently many specimens are more or less 

 F, A, b, 1. 1-2. banded below with dusky. Breeds in the 

 northern portion of the northern hemisphere on sea coasts 

 and inland waters ; migrates southward in Aug. Sep. and Oct. ; 

 winters far south : goes north in May ; not uncommon off the 

 coast, but not often seen near the land. 



2. PARASITIC JAEGER, S. parasiticus. Differs from 

 1 in being smaller (15.00 to 21-00), in having the central tail 



