Nisbet, I.C.T. 1976a. Colonization of Monomoy by laughing gulls. Cape Natural- 

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t 



Nisbet, I.C.T. 1976b. Returns from terns. Mass. Audubon News-letter 15:3-5. 



Nisbet, I.C.T., and W.H. Drury. 1972a. Measuring breeding success in cominon 

 and roseate terns. Bird-Banding 43:97-106. 



Nisbet, I.C.T. , and W.H. Drury. 1972b. Post-fledgling survival in herring gulls 

 in relation to brood size and date of hatching. Bird-Banding 43:161-172. 



Noble, G., and D. Lehrnian. 1940. Egg recognition by the laughing gull. Auk 

 57:22-43. 



Noble, G.K., and M. Wurm. 1943. The social behavior of the laughing gull. Ann. 

 New York Acad. Sci. 45:179-200. 



Norton, A.H. 1907. Report of Arthur H. Norton on colonies of birds in Maine 

 receiving special protection in 1907. Bird-Lore 9:319-327. 



Norton, A.H. 1913. Birds new or rare to Maine. Auk 30:574-576. 



Norton, A.H. 1914. Report of Arthur H. Norton, field agent for Maine. Bird- 

 Lore 16:489-492. 



Norton, A.H. 1915. Report of Arthur H. Norton, field agent for Maine. Bird- 

 Lore 17:501-502. 



Norton, A.H. 1916. Notes on sorre Maine birds. Auk 33:376-383. 



Norton, A.H. 1918. Report of Authur H. Norton, field agent for Maine. Bird- 

 Lore 20:465-467. 



Norton, A.H. 1921. Report of Arthur H. Norton, field agent for f^aine. Bird- 

 Lore 23:355-357. 



Norton, A.H. 1922. Report of Arthur H. Norton, field agent for Maine. Bird- 

 Lore 24:410-412. 



Norton, A.H. 1925. Report of Arthur H. Norton, field aoent for Maine. Bird- 

 Lore 27:472. 



Norton, A.H. 1926. Report of Arthur H. Norton, field agent for Maine. Bird- 

 Lore 28:464-465. 



Norton, A.H. 1928. Report of Arthur H. Norton, field agent for Maine. Bird- 

 Lore 30:455. 



Norton, A.H. 1929. Report of Arthur H. Norton, field agent for Maine. Bird- 

 Lore 31:469. 



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