List of Illustrations 



Figure Page 



1. The twelve grouse shown represent parents and a brood of 

 grouse 3 



2. Feather tracts and spaces of ruffed grouse 13 



3. Type of cover preferred by grouse. Taken from Analysis of Cer- 

 tain Cover Requirements of the Ruffed Grouse in New York 

 State. G. Bump, 1938. 82 



4. Intensity of use of cover types by adult grouse by seasons 84 



5. Cover types used by adult grouse at different seasons 87 



6. Seasonal utilization of food by adult ruffed grouse according to 

 type of food (Northeastern States) 101 



7. Utilization of food by young ruffed grouse according to types 



of food ( Northeastern States ) 102 



8. Twenty-five most important food plants used by the ruffed 

 grouse in the northeast 112 



9. New York State Game Kill Records 1930-1938 217 



10. Generalized Population Trends of Ruffed Grouse, certain Preda- 

 tors, and certain Rodents, New York State 1930-1939 (Based 



on State Game Kill Records and field data) 218 



11. Reported take of ruffed grouse by hunters 256 



12. Correlation of grouse recovery rate with breeding density, Con- 

 necticut Hill, N. Y., 1930-1937 283 



13. Life equation of grouse for an increasing population 285 



14. Life equation of grouse for a stable population 285 



15. Normal grouse infant mortality curve June to September 304 



16. Hypothetical imit of grouse cover 333 



17. Plan for cover type changes in a woodland 335 



Plate 



1. (Upper). When the white man came, farms were hewn out of 

 the wilderness. (Lower). Where the land clearance work was 

 confined to small scattered units, the range was improved for 

 grouse. 



2. (Upper left). The drumming of the cock grouse is one of the 

 wonders of the bird world. (Upper right). Strutting before the 

 female bird. (Lower). Young grouse in a brood dust bath. 



