1972 



Furrer, R. K. 1972. A late spring sight record of Ross 1 Goose in east-central 

 Washington. Murrelet 53: 49-50. 



LeGrand, E. K. 1972. A second Ross 1 Goose at Pea Island, N.C. ; verification 

 of specific purity of these birds. Chat 36: 61-62. 



Prevett, J. P. and C. D. Maclnnes. 1972. The number of Ross' Geese in central 

 North America. Condor 74: 431-438. 



Ryder, J. P. 1972. Biology of nesting Ross' Geese. Ardea 60: 185-215. 



1971 



Cooke, F. and J. P. Ryder. 1971. The genetics of polymorphism in the Ross' 

 Goose ( Anser rossii ). Evolution 25: 483-496. 



Ryder, J. P. 1971. Size differences between Ross 1 and Snow goose eggs at 

 Karrak Lake, Northwest Territories in 1968. Wilson Bull. 83: 438-439. 



Trauger, D. L. , A. Dzubin and J. P. Ryder. 1971. White Geese intermediate be- 

 tween Ross' Geese and Lesser Snow Geese. Auk 88: 856-875. 



Zahm, G. R. 1971. Ross's Goose in Johnston County, Oklahoma. Bull. Okla. 

 Ornithol. Soc. 4: 32-34. 



1970 



Lahrman, F. W. 1970. Unusually large numbers of Ross' Geese observed at Last 

 Mountain Lake. Blue Jay 28: 169-170. 



Ryder, J. P. 1970. A possible factor in the evolution of clutch size in Ross' 

 Goose. Wilson Bull. 82: 5-13. 



1969 



Buckley, P. A. 1969. Ross' Goose in North Carolina: first Atlantic seaboard 

 occurrence. Auk 86: 551-552. 



Ryder, J. P. 1969a. Nesting colonies of Ross' Goose. Auk 86: 282-292. 



. 1969b. Timing and spacing of nests and breeding biology of Ross' Goose. 



Ph.D. thesis, Univ. Saskatchewan/Saskatoon, SK. 



Schwilling, M. D. 1969. Ross Goose taken in Kansas. Bull. Kansas Ornithol. 

 Soc. 20: 27. 



1967 



Ryder, J. P. 1967. The breeding biology of Ross' Goose in the Perry River 



region, Northwest Territories. Can. Wildl. Serv. Rept. Ser. No. 3. 55 pp. 



91 



