902 



/V/)A'V 



15. 333. 334. 338. 371. 385. 389. 390, 



209, 215. 218. 219. 220. 222. 221, 



divcrsiBcaliun of cover 596 

 dog (see also grouse dogs) 



456. 496. 711, 876 

 dogwood 198, 204. 206, 207, 



231. 231, 595 

 dogwood, bunchbcrry 206, 215. 225, 227, 231 

 dogwood, flowering 883 



dogwood, panicled 206. 215, 227. 655. 662. 848. 849. 883 

 dogwood, red osier 215. 849 

 dogwood, round leaved 206 

 dogwood, silky 215. 883 



dogwood family, as a source of grouee food 206 

 Doll. E. R. 436 



domestic animals, effect on grouse 384, 385, 392 

 domestic fowl (see fonl) 

 dominance (sec social order) 

 Douglas. D. 47 

 dove, mourning 683 

 down 36. 79. 746. 748 

 drumming 66. 248, 266, 274 



description 274 



how produced 248. 276 



purpose 278 



season 248. 278 

 drumming log 279 



number per male 280 



relation to nest 266 



role during breeding season 266. 267 



variations observed 279 

 Dryopteris 198 

 Dryopteris marginalis 206 

 Dryopteris spinutosa 206, 845 

 dork 101. 103. 392. 416. 433, 434 

 diK'k. blark 212. 683 

 Durant. A. J. 436 

 Duryea. P. B. xxxv 

 dust bathing 271. 394 

 Dutchess County (N.Y.) 285 

 Dwight. J.. Jr. 78 



eagle, golden 333 

 earthworm 439 



as a source of cropworm infection 408. 419 



as a source of gapeworm infectton 408, 418 

 East Sandwich Came Farm (Mass.) 27 

 Eaton. E. H. 235, 333 

 Echinochloa crusgalH 845 

 Echinoparyphium aconiaium 409, 434 

 economic importance of grouse 37, 100 



food value 100. 2.35, 371 



number taken by hunters 101 



orchard damage 37. 102. 187 



relation to agriculture 101, 212 



sale of breeding slock 104 



sporting value 103. 371 

 edges (sec also interspersion) 393 



effect on adult grouse distribution 171 



effect on brood distribution 172 



importance of coniferous plantations 171 



value of 170 



variation in importance 173 

 Edgcworrh. F. H. 721 



Edminster, F. C. 30. 353. 369. 637. 667, 673. 681. 694 

 Edmonton (Alta.) 520 



Edwards. C. 3. 6. 11. 14. 21. 36. 46, 47. 274. 276 

 eggbound. a pathologic condition HI 

 egg-laying 



habits of female during 266 



rote of 286 



relation to temperature 303 



lime of 265. 284 

 eggs 



color 37. 71 



development of 73 



fertility (see reproductive capacity^ 



hatchability (sec reproductive capacity) 



number (sec number of eggs) 



resistance to low temperature 452 



shape 37, 71 



size 72 

 Eimrria (sec also coccidio) 428 

 Eimeria angusla 409, 428 

 Eintriin honaaar 409. 428 

 Eimrria iHspersa 409. 428 

 Einarsen, A. S. 20 

 Elalcridao 213 



elder, red-berried 204. 222. 65.-5. 88S 

 elderberry 201 

 Eldred, S. ,360 

 Elrocharis 192 

 elk 671 



Elliott. D. C. 235. 261. 371. 389. 390 

 elm 212 



Elmira (N.Y.) 201. 204 

 Elton, C. 311. 325. 5.56. 575. 578. 579, 749 



embryology 72 



annual changes 75 



chemiral composition of chick 37, 7ti 



development of embryo 76 



hatchability of eggs 72. 365 



livabilily of chirks 73 



mortality 76. 366 



physico-chcmicol properties 73 



structure of egg and embryo 73 

 encephalomyelitis, equine 408 

 Endslcy. H. S. 14 



England 2. 3. 103. 274. 309. 404. 630. 650. 653 

 English. P. F. 340 



enterohcpalitis (see also blackhead) 435. 438 

 Ephemeroptera 775 

 Epifagus virginiana 210 

 equisetin 195 

 Ericaceae 202 

 Erithizon dorsotum 333 

 erosion control 587. 615 

 Erringion. P. L. 30. 309. 321. 327. 524 

 Escanaba River (Mich.) 374 

 Eskimo 4 

 Essex m.Y.) 264 



Essex County (N.Y.) 95. 221. 433. 69.^ 

 elher extract, a foorl component 238 

 euonymin 195 



Europe 254. 419. 426. 427. 43 (. 556. 578 

 Euschisius 213 

 Everett. F. 39 

 Ewbank. E. L. ^.'Ci 

 Experimental Came Farm (N.Y.) 418 

 exploitation of grouse 8. 388 

 Extension Servire 687. 688 

 exposure (see also slope) 



relation to nest location 130. 787 

 eye worm 409 



also productivity; management) 511. 



4-43. 584 

 353 



847 



factors of abundance (see 



513. 694 



food 181. 229. 584 



habits 247 



man 369. 584 



parasitism and disease 401. 583 



physiology 60. 749 



predation 307. 583 



propagation, artificial 



reproductive capacity 



shelter 105. 584 



weather 299 

 Fagaccae 201 

 Fagopyrum esculrntum 

 F/igus 198. 201 

 Fagus grandifoUa 201. 846 

 Fagus sylvatica 240 

 Fnico columbarius 333 

 Falro peregrinus 333 

 Falco rufticolus 333 



fall feeding grounds 153. 155. 160, 230. 642. 801. 829 

 fall shiilTle (see dispersal) 

 farming 



effect of abandonment of suhmnrginal land 116. 226 233. 381. 

 597. 618 



effect on grouse food supply 116. 233 



relation to grouse abundance 370. 383 

 Farrow. E. P. 309 



fat. a food component 236. 237, 238. 845 

 feathers (see also pterylography) 



function 78 



growth and replacement 37. 85. 717 



kinds 59. 746 



moult 37. 78. 747 



number 36, 60. 747 



succession 78 

 feather spaces .59. 741, 745 

 feather tracts .5*). 711 

 feeding habits 37. 248, 264 



amount of food eaten 189 



caution in accepting new foods 188 



influence of weather 186. 265 



of adults 197. 261 



of chicks 187. 221 



periods 186. 265 

 feeding peculiarities 



budding 37, 103. 187 



effcci of color, texture. *ir.e 187 

 Felis couguar 333 

 Fellows, J. O. 95 

 female grouse (see also nesting) 



control of chicks 292 



defense of chicks 248, 291 



defense of nest 288 



guidonce of chicks 248, 293 



hahitfl 281 



proportion nesting 359. 517 



