LITERATURE CITED 



Erwin, R. M. 1979. Coastal waterbird colonies: Cape Elizabeth, Maine to Virginia. U.S. Fish and Wildlife 

 Service, Biological Services Program, FWS/OBS-79/10. 212 pp. 



Korschgen, C. E. 1979. Coastal waterbird colonies: Maine. U.S. Fish and Wildlife Serivce, Biological Ser- 

 vices Program, FWS/OBS-79/09. 83 pp. 



647 



