K\:\ 'lo Till-: w .\ii:r imkds oi-^ i-i.okida. 



191 



IvxMii.v LARID.E. Gulls and Ticrns. 



Sir.iAMii.Y LARIN.-E. Gulls. 



Genus LARUS 1>inn. 





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• I 



LARU5 MARINU5 Z/>///. 

 Great Black=backed Gull. 



Adult in SI1//1//UT : Whole back dark slate color ; outer piimaiics l)lack. with tips and tcrnii- 

 naLspotsof wliite: liead and under parts white. 



Adnlf in winter : Head and neck streaked with gray. Immature birds are mottled dusky and 

 buff: head and neck streaked : tail with narrow subterminal band: a very large gull. 



Length. 29: Wing. 18: Tail. S: Tarsus. 2.70: IMll 2.40. 



Coast of North America south to South CaroHna : accidental in Florida. 

 Breeds from Northern Maine northward. The nest is built on the oround ; 

 the eo-i;s are usualh- two. pale browiu marked with chocolate brown. 



A specimen of this mdl w.ts shot near St. Augustine during iIk- winter 

 of 1894-5. 



