INDEX 



901 



cover types 



arrangement 112. 168. 609 



characteristics 120, 144 



composition 112, 614 



function in filling habitat requirements 110. 607 



influence of size anJ shape HI. 609, 612 



interspersion (see also interspcrsinn.! 113. 609 



mapping of 626, 698 



of open land 120, 226 



of overgrown land 120. 226 



of slashings 120. 125 



of woodlands 120. 123 



relatiim to food supply 226 



relation to nesl survival 135. T94 



seasonal function 153, 819 



succession of 118 

 rover use, (jeld data recorded by Investigaliim 701 

 coverts, designing of (see also management) 



cicar-rut units 621 



essentials 607 



forest stand and ganu: cover iniprovenit-nt 623. 6.'i0, 777 



open land 616 



oveigrown land 618 



woodland 620 

 coverts, irleal 588 



for adults 593 



for broods 589 



for hunting 594 



for nesting 589 

 coverts, pattern of 61.1 

 Cowan, I. McT. 31 

 Cuwden, .S. M. 269 

 crahapple 655. 662, 883 



Cram. E. B. xxxvi, 33. 109. H5. 118. H9. 420. 423 

 cranberry, high bush 201. 203. 20;. 215, 227, 655. 662. 883 

 Cnitnegus 198, 200 

 Cintiirgus rrus-galli 847 

 crayfish 341. 342 



crazy flight 248, 253. 255, 258. 318. 404. 532 

 cricket 188. 213 

 cricket, field 213 

 Criddlc. N. 211. 557. 564 

 crippling loss 376 



Crissey. W. F. 30. 98. 299. 3.53, 693. 691 

 crop, grouflc as a 587 

 crop, part of digestive tract 737 

 crop cc)nlent9. average volunu- 186 

 crop influmniatinn 411. 412 

 cr<ip worm 419 



description 419. 425 



distribution 402, 409. 413. 415. 416. 419 



incidence and importance 410. 411. 415. 419 



life cycle and disscminalion 408. 419 



patJiogenicity 412, 419 

 Cross, E. C. 323. 567 

 crow 15. 3.^0, 333. 334, 335. 336, 337, 338, 381, 416. 418. 439. 



552. 669. 710, 875, 876 

 crown cover (see nesting cover, brood cover, adult cover) 

 cultivation (see farming) 

 (airculionidae 213 

 cutting of limber or brush 



as a management tool 640 



clear-cutting 176 



relation lo food supply 233 



selectitm 644 

 nit-worm 101. 212 

 Cyathosoma siriiiCum 409. 433 

 cycles (see also fluctuations) 402, 578 



applicability of term to grouse 556 



phenomena to which term has been ascribed 578 



prediction 579 



records of 12, 16 



studies of 13, 17 



suggested causes 17. 20 

 suggested remedies 30, 31 



variable periodicities of fluctuations recor<lcd 578 

 Cvperaceae 203 

 C'yperus 192 



Cypress Hills (Sask.) 18. .SO 

 Cyloleichus nudus ^scc also air-sac mites) 409, 411 



daddy long-legs 213 



Dakota .50, 558 



damage lo orchards 11. 102, 187 



dandelion 220, 238. 243. 849 



Uansville (Me.) 21 



Darling, J. N. 668 



Darrow, R.W. 30, 35, 46. 48. 53, 247. 307. 511. 555. 667. 668, 



694. 709 

 Darwin. C. 513 

 data (see also methods and techniques) 



analysis of (see biomcirical analysis) 



form sheets used 702. 703, 704, 705 



recorded in field 126. 700 



representativeness 126 



Daucus carota 193. 848 



Davainea tetraoensis 409, 434 



Daiainea proglattina 409. 415. 426. 434 



Davenport. L. A. 845. 846. 847. 848. 849 



Davis, D. E. 58. 694, 721 



Davis. G. E. 417 



dead falls 389 



Deane, R. 324 



Dearborn, N. 203, 206 



death rate, human 578 



decrease in grouse abundance (see fluctuations) 



deer 239. 513. .521. 849 



eradication of hoof and mouth disease in 671 

 relation to grouse managemeot 666 

 deer, mule 309. 691 

 deer, white-tailed 309. 383, 682 



deer-flies, as a source of infection of tularemia 416, 417 

 Deer Run Refuge (Mo.) 19 

 DeCarmo. W. R. 31 



Delaware County (\.Y.) 19, 20. 206. 213. 264. 385 

 Delhi (N.Y.) 20 

 Dellinger. Dr. 24 

 Delmar (\.Y.) 19, 184.448 

 DeLury. R. E. 185. 241, 575 



density «f grouse populations 330, 512, 358, 559 

 method of recording 714 

 of adults 519, 525 

 of broods 518 



of fematcH in spring 317, 518 

 of nests 517 

 relation lo fluctuations in abundance 350, 511, 532, 533. 331. 



535. 539. 540, 541. 542. 544. 576 

 relation to net productivity 331, 349 

 saturation point 331. 512, 521 

 Denys. X. 3 



deponits. Pleistocene 46, 272 

 description of grouse 

 first 3, 36. 46 

 general 36. 38 

 sex differences 36. 39 

 desertion (see nesting) 

 Dfsmodium 208 

 development of cover 6^19. 654 

 development of grouor 77 

 dew. an a source of water 243 

 rliarrhea. while 415 

 Dice, L. R. 285 

 dichromatism 36, 48, 57 

 Didelpkii lirginiana 324, 333 

 diet, of grouse 196 

 Dietz. S. S. 31 

 Digby (N.S.) 47 

 dipentive tract 737 



parasites of 419. 436 

 Dillin. D. J. 13 

 Himmick. C. 27 

 Diplopoda 775 

 Uiptcra 775, 776 

 tliscovery of species 36. 46 

 discovery nf subspecies 47 

 disease (see also parasites and disease) 

 as a cause of mortality 319 

 as a contributory factor in fluctuations of grouse abundance 



309, 401, .574 

 hoof and niouih in deer 671 

 studies of 30, 31 

 diseases of wild mammals, relation to grouse 416 

 dispersal, fall (sec also crazy flight) 255. 522 

 Ihipharynx 408. 412. 414. 574 

 Oispharrnx spiralix (see also stomach worm) 33, 256, 402. 406. 



407, 409, 413, 415, 416. 420, 425, 491 

 display 



as a part of courtship 281. 282 

 intimidation 66. 282 

 relation to social order 64. 268 

 tlistance between successive flushes of grouse 167. 813 

 distance between successive nests of marked female grouse 259 

 distance grouse flush from observer 

 influence of cover 165. 840 

 influence of wind 162 

 reflushes 166. 842 

 Distomum commutatum 409 

 dislribulion of grouse (local) 

 relation to available water 243 

 relation to food 229 

 distribution of species (see also range) 

 effect of man's activities 50, 54 

 general 36. S3 

 in New York 36, 56 

 in northern Canada 52. 56 

 in the Rockies 48, 50, 54 

 un various islands 50, 254 

 district forest practice board 687. 688 

 district game manager 686, 688 

 District of Columbia -120 



