REFERENCES » 
Peters, J. L. 
1934 Checklist of Birds of the World, Vol. 2, Harvard University 
Press, Cambridge. pp. 66-67. _ oa pie? 
Witherby, Jourdain, Ticehurst, and Tucker 
1952 The Handbook of British Birds. H. F. and G. Witherby Ltd. 
London. pp. 246-250. 
Phillips, John C. 
1928 Wild Birds Introduced or Transplanted in North America, 
United States Department of Agriculture Technical Bulletin 
No. 61, Washington, D. C. pp. 33-34. 
Middleton, A. D.,and Helen Chitty , © 
1937 The Food Be Adult Partridges, Perdix perdix ada Alectoris | 
rufa, in Great pe tteda, “Journal of Animal-Ecology, Vol. 6,. 
No.- 2. pp. 322- mihbe 5 ek ; ee 
aevenes Jose de 
1954 Trabajos del Institudo de Ciencas Naturales, Serie Biologica, 
Vol. I, No. 2, Consejo Superior de Investigations Cientificas, 
Madrid. pp. 319-321. 
United States Department of Agriculture 
1941 Climate and Man. Yearbook of Agriculture, Washington, D. C. 
p. 677. 
Pequeno, D. D. 
1950 De la Caza de la Perdiz con Reclamo. .Liberia de Luis Santos, 
Madrid. p. 295 
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