C-20 



Henry, C. J. and J. C. Odgen. 1970. Estimated status of osprey 

 populations in the United States. Jour. Wildlife Mgt. 34(1): 

 214-21. 



Henry, C. J. and W. T. VanVelzen. 1972. Migration patterns 

 and wintering localities of American ospreys. Jour. Wildlife 

 Mgt. 36(4):1133-1141. 



Henry, C. J. and H. M. Wight. 1969. An endangered osprey 

 population: estimates of mortality and production. Auk 86(2) : 

 188-198. 



Hickey, J. J. (Edit.) 1969. Peregrine falcon populations: 

 their biology and decline. Univ. Wisconsin Press, Madison, 

 Wise. 596 p. 



Hickey, C. J. and D. Anderson. 1968. Chlorinated hydrocarbons 

 and eggshell changes in raptorial and fish-eating birds. 

 Science 162 (3850) :271-273. 



Reese, J. 1965. Breeding status of osprey in central Chesa- 

 peake Bay. Maryland Birdlife 21(4) :105-108. 



1969. A Maryland Osprey population 75 years ago 



and today. Maryland Birdlife, 25(4) :116-119. 



1970. Reproduction in a Chesapeake Bay osprey 



population. Auk 87(4) : 747-759. 



1972. Osprey nesting success along the Choptank River, 



Maryland. Chesapeake Science 13(3) :233-235. 



1972. Supplement Report #3: Breeding osprey survey 



of Choptank River, Md., Maryland Ornithological Society, Un- 

 published. 



Rhodes, L. 1972. Success of osprey nest structures at Martin 

 National Wildlife Refuge. Jour. Wildlife Mgt. 36(4) :1296-1299. 



Wiemeyer, S. 1971. Reproductive success of Potomac River 

 ospreys - 1971. Chesapeake Science, Vol. 12(4) :278-280. 



