Measures proposed : Work towards the elimination of food chain pesticides in the 

 environment. Responsible agencies should set appropriate regulations for protection. 

 All out effort to develop a self-perpetuating captive population to bolster numbers in the 

 wild. 



Number in captivity : 150 to 200 tundra or taiga inhabiting peregrines, including 15 held 

 at Patuxent Wildlife Research Center . 



Breeding potential in captivity : Probably poor. At least seven peregrines of all sub- 

 species have been reared in captive breeding projects since 1966. 



References : 



Berger, D. D. 1970. (in lit. ) 



Cade, T. J. 1960. Ecology of the peregrine and gyrfalcon populations in Alaska, 



Univ. Calif. Pub. Zool. 63:151-290. 

 , CM. White, and J. R. Haugh. 1968. Peregrine and pesticides in 



Alaska. Condor 70: 170-178. 

 , and R. Fyfe. 1970. The North American peregrine survey, 1970. 



Canadian Field Naturalist 84: 231-245. 

 Eberly, L. 1970. The 1969 NAFA Peregrine Falcon Symposium, Raptor Research 



News 3(4): 73-74. 

 Enderson, J. N. 1965. A breeding and migration survey of the peregrine falcon. 



Wilson Bull. 77: 327-339. 

 , and D . D . Berger . 1968 . Chlorinated hydrocarbon residues in 



peregrines and their prey species from northern Canada. Condor 70:149-153. 

 Fyfe, R. 1969. The peregrine falcon in northern Canada, pp. 101-114 m: Peregrine 



Falcon Populations, their biology and decline, edited by J.J. Hickey, Univ. 



Wisconsin press. 

 Hickey, J. J. (editor) 1969. Peregrine falcon populations , their biology and 



decline. Univ. of Wisconsin Press, Madison: 596 pp. 

 Ruos, J. L. 1970. Correlation of Arctic temperatures in July with numbers of 



tundra peregrines (E_. q_. tundrius ) seen per part day in October along the 



mid-Atlantic coast. Special Report. 

 Shor, W. 1970. Banding recoveries of Arctic migrant peregrines of the Atlantic 



coast and Greenland populations. Raptor Research News 4(4): 125-127. 

 White, CM. 1968. Diagnosis and relationships of the North American tundra 



inhabiting peregrine falcons. Auk 85:179-191. 



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