THE BIRDS OF NEW JERSEY. 47 



when Scott states that he had procured many specimens during the 

 past four winters at Long Beach.^ The winter of 1878-9 seems to 

 have been a great season for these birds. Mr. C. A. Voelker took one 

 at the mouth of the Schuylkill and four others in the Delaware, oppo- 

 site Tinicum. Dr. W. L. Abbott shot one in Cape May county De- 

 cember 17th," another was taken at Atlantic City about the end of 

 November,^ and another was found in the woods near Camden in an 

 exhausted condition early in December.* 



Since then there are but few records. One was shot at Pennsgrove, 

 on the Delaware, in November, 1891 ;^ another at Cape May, Novem- 

 ber, 1904 (H. W. Hand),® while one was seen with other sea birds 

 ten to twenty miles off Long Branch December 31st, 1904." A single 

 bird was taken near West Creek, Ocean county, January 19th, 1909, 

 bv Joshua Parker,^ 



Order LONGIPENNES. 



Long- winged Swimmers. 

 Family STERCORARIID^. 



The Jaegers. 



The Jaegers differ from the Gulls mainly in their hooked upper 

 mandible and in the presence of a sheath, which covers it at the base, 

 overhanging the nostrils. These birds are parasitic in their habits, 

 pursuing the smaller Gulls and compelling them to disgorge for their 

 benefit the fish that they have swallowed. They are pelagic, and occur 

 on the fishing banks off shore, breeding in the far north. 



* Bull. Nutt. Orn. Club, 1879, p. 228. 

 '^ Colin. Acad. Nat. Sci., Philadelphia. 



' Collins Bull. Nutt. Orn. Club, 1879, p. 236. 



* Trotter Bull. Nutt. Orn. Club, 1879, p. 236. 

 " Voelker Abst. Proc. D. V. O. C, I., p. 12. 



° Cassinia, 1905, p. 59. 



^ Stackpole & Wiegman, Bird Lore, 1905, pp. 27, 28. 



