UNITED STATES 

 DEPARTMENT OF THE INTERIOR 



Stewart L. Udall, Secretary 



Frank P. Briggs, AssistaiH Secretary for 

 Fish and Wildlife 



FISH AND WILDLIFE SERVICE 



Clarence F. Pautzke, Commissioner of 

 Fish and Wildlife 



BUREAU OF SPORT FISHERIES 



AND WILDLIFE 



Daniel H. Janzen, Director 



BRANCH OF WILDLIFE RESEARCH 



Daniel L. Leedy, Chief 



PATUXENT WILDLIFE RESEARCH CENTER 



John L. Buckley, Director 



Circular 107. Issued by 



U.S. Fish and Wildlife Scrvic? 



at Washington, May 1961 



Patuxent Wildlj/e 

 Research Center 



Contents 



'J-' The beginning 3 



"JP The Center, its work and facilities. 4 



"jF^ Developing new habitats for water- 

 fowl 5 



Wt"^ Controlling pest plants in marshes. 7 



"J^ The Back Bay-Currituck Sound 



problem 8 



'*"' Migratory bird populations 9 



'^ Pesticide-wildlife studies 11 



'^' Map of the Center 12-13 



"JF^ Diseases and parasites of wildlife. . . 15 



'3F^ The blackbird problem 16 



'3P Wildlife management on the farm. . 18 



'3F-' Wildlifemanagementon forest lands. 20 



— "jr^ Information for visitors. . . . !' 21 



"3^-' Roads to the Center 23 



Cover — View of the headquarters area at Patuxent Wildlife Research 

 Center. The buildings are identified on the map on pages 12 and 13. 



For sale tiy (he Supprintendont of Documents, U.S. Govornmom PrintinR Ollicc 

 Washington 25, D.C. • Price 20 cents 



