Recent years have seen dramatic changes in the population levels of 

 a number of species. Factors contributing to these changes are discussed, 

 and future trends are forecast relating to possible increases or 

 decreases among individual species and species composition. (S.B. 

 Sail a, chapter synopsis) 



Keywords: birds, coastal marshes, estuarine areas, Cape Hatteras, 

 Cape Cod 



V-B-12 



Chamberlain, E.B., Jr. 1960. 

 management. Florida Game 

 Bulletin No. 7. 62 pp. 



Florida waterfowl populations, habitats and 

 and Fresh Water Fish Commission Technical 



This study was designed to gather information on the distribution and 

 abundance of resident and migratory waterfowl in Florida and their 

 utilization of the various habitats, to classify and evaluate these 

 various types of waterfowl habitats, to develop techniques for improving 

 and managing them, and to investigate the effects of various land use 

 practices. 



Areas covered in the study include general descriptions, scope of 

 investigations, habitat studies, population studies, harvest, hunting 

 economics, and land use management. 



Certain land use practices are detrimental to waterfowl . Draining 

 dredging, and filling in of marshlands result in a severe loss of 

 waterfowl habitat. (H.D.) 



Keywords: waterfowl, habitats, environmental changes, Florida 



V-B-13 

 Robert, H.C, 

 Georgia: 



, J.M. Teal, and E.P. Odum. 1956. Summer birds of Sapelo Island, 

 a preliminary list. The Oriole 21:37-45. 



The authors present a list of birds observed on Sapelo Island during 

 June, July, and August 1955 and 1956. Some breeding records in May 

 are included, as well as some comparisons with earlier works. 



Because of the large areas of shallow-water habitats, the wading 

 birds are the conspicuous species on Sapelo Island. Three species 

 that are associated with the marsh community are the clapper rail, 

 long-billed marsh wren, and seaside sparrow. 



The list is divided into three parts: 1) species that breed on the 

 island; 2) species that do not breed on the island even though they 



218 



