JAEGERS 



(37) Stercorarius parasiticus 



{Linn.) (Lat.. parasitic). 

 PARASITIC JAEGER; JIDDY- 

 HAWK. Has a dark phase. The 

 light plumage is like that of the Loug- 

 tailed Jaeger shown. Scaly shield, 

 or cere, more than half the length 

 of the bill. Middle tail feathers 

 pointed, about three in. longer than 

 the rest. L., 17.00; W., 13.00; T., 

 8.50; B., 1. 15. 



(38) Stercorarius longicaudus 



(Vicill.) fLat., long-tailed) 

 LONG-TAILED JAEGER. Scaly 

 shield less than half the length of the 

 bill. Middle tail feathers lengthened 

 about seven in. L., 21.00; W., 12.50; 

 T., 12.00 (ad.); B., i.io. 



Range — Breeds within the Arctic 

 Circle. Winters along the coasts from 

 N. E. and B. C, southward. 



feathers. Young birds of the two latter species can only be 

 recognized by the differences in the make-up of their bills, 

 as shown here. Their feet are peculiar in that the tarsi 

 are lead-blue in color, while the toes and webs are black. 



They appear off our coast regularly during July or August, 

 many staying through the winter as far north as Long Island, 

 while others migrate as far south as Cape Horn. During 

 migrations they also visit the Great Lakes. Their summer 



34 



