INDEX 



899 



265. 274, 276. 279. 572 



boJv lemperaiure (see also physiological studies) 62 



Bonasa 46. 724. 725, 726. 727, 728, 730. 732, 733, 737 



Honasa ceres '16 



Bonasa, characters of 46 



Bonasa jobsii 48 



Bonasa umbellus brunnescens 48 



Bonasa umbellus helmei 48 



Bonasa umbellus sabini 47. 48. 52. 53, 72, 235 



Bonasa umbellus ihayeri 47, 48 



Bonasa umbellus togata 39. 47, 48. 53. 261 



Bonasa umbellus umbelloides 47. 48, 53, 197, 210 



Bonasa umbellus umbellus 38. 39, 47, 48. 53 



Bonasa umbellus yukonensis 47. 48. 197 



Bonasia major Canadensis 47 



bonasus 46 



borer, poplar 101, 212 



Boston (Mass.) 8. 557 



botulism 671 



Boudoin College 33 



Boughton. R. V. 422. 42.H 



bounties, on grouse 11, 37. 102, 187 



bounties, on predators 381, 382, 383, 388 



Rrarhyrhinus rugifrons 213 



bracken 309 



bracken. E. A. 23 



Bracketr. M. W. xxxv 



Bradbury. H. M. 243 



Bradley, J. T. 360 



Bradshaw. F. 15 



Brazil 419 



Breckenridge, W. J. 521 



breeding (sec also mating liabita) 



readiness for 69. 267 



relation to age 353, 359 

 breeding failure (see also non-breeding) 311, 353. 355. 539, S 

 breeding season 265 

 breeding stock, sale of 104 

 breeding success (sec productivity) 

 Brewer. T. M. 52 



Brewster, W. 255. 260. 261. 262. 264. 

 Bridges. H. P. 23 

 Brisson. M. J. 47 



British Columbia 31, 47. 50. 52. 53. 51. 193. 409. 435 

 British Columbia Provincial Museum 31 

 British Committee of Inquiry on Grouse Dificase 40t 

 British Isles 103. 104, 578 

 Bronx County (N.Y.) 56 

 brood cover 138 



basic patlerns 589 



composition 593 



density 593 



efTecl of density of crown cover 



eflerl of density of undergrowlh 



influence of slope 148, 593. 813 



influences affecting choice 138, 801 



relation to age of brood 141 



relatifin to ground conditions 141, 8117 



relation to lime of day 142, 803 



relation to water 593 



relation to weather 142. 147, 305. 801. 810. 815 



relative importance of types 139. 801 



types (if crown cover chosen 139. 801 



types of undergrowth chosen 146, 808 



undergrowth 593 

 brood mortality (see also survival during brood period I 3 



causes responsible 528 



chief predators involved (sec also methods and lechniqu*-' 

 335, 385 



fomparison with artifically reared stock 316. 528 



cfTeri of predator contrnl .^08. 316. 347 



number of dead birds examined 335 



i)tialilv I'f pvidciiri- ascribed to dlagmiiies of dead bird 

 ined 876 



recorded during Investigation 315 



relation to weather 299. 303. 317. 528 



role of predaiion 307, 317. 347. 528 

 brood spot 59. 746 

 broods (see also chicks) 



area traversed 248. 291 



double 293 



habits of 294 

 Brooke, Mr. 13. 274. 276 

 broomrape family 210 

 Brown Sand Hills (Tex. I 52 

 Briinelt. E. L. 33 

 Brunswick (Me.) 34 

 Bubo virginianus 322, 333 

 buckbrush 203. 204 

 buckwheat 210, 212. 230, 233 

 buckwheat, common 847 

 buckwheat, false 847 



buckwheat family, as s source of grouse food 206 

 budding 37, 103. 187 



141. 802 



147, 800 



buffers, (see also methods of management) 



fluctuations in abundance (see also methods and techniques) 

 308. 322, 325. 556, 567 



principal species of the Northeast 325 



relation of fluctuations to fox activity 308, 322 



relation of fluctuations to predation 307. 308. 315. 322, 552 

 bug 213. 224 

 bug, plant 101. 212 

 bugs, true 213 



building activity, cycle in 578 

 Bull Hill (N.Y.) 345. 520 

 Bump. C. 1. 15, 22. 24. 30. 34, 35, 63, 90, 100. 105. 181. 183. 



220. 443, 550. 557, 568. 581, 585. 605, 637. 667. 674, 694, 845. 



846, 847, 848. 849 

 Bump. J. 22. 24, 30. 694 

 bunchbcrry (see dogwood) 

 Burckmyer, E. K. xxxvi. 33 

 burdock 193. 849 



Burnham. J. B. xxxi. xxxvi. 15. 27. 30. 32. 95, 264. 562, 574 

 bursa Fabricii 84, 90, 94. 256. 434. 516. 718, 739 

 Buraon, E. H. 14 

 Buteo 323, 330 

 Buteo borealis 330. 333 

 Buteo lagopus s. johonnis 330 

 Buteo lineatus 330. .3.33 

 Buteo platypterus 330, 333 

 buttercup 208. 218. 222. 223. 224. 231 

 buttercup, tall 847 



buttercup family, as a source of grouse food 208 

 butterfly 213 



calcium, o food component 239 



calcium oxalate 195 



California 2. 36, 46. 272. 433, 671 



calls 99 



Camden (So. Car.) 52 



Camponotus herculeanus 213, 849 



Canachites canadensis 210 



Canada 4. 8. 18. 30, 36, 48. 52. 53. 54. 56. 104. 241. 323. 325. 



396. 505. 557. 562. 563. 565. 567. 568. 572. 579 

 Canandaigua (N.Y.) 208 

 Canis 333. 578 

 canker-worm 101, 212 

 Cape Cod (Mass.) 453 

 Cape Mendocino (Colif.) 47 

 capercailzie 25, 427, 434 

 Capillaria 402, 408 



Capillaria annulata (sec also cropworm) 409, 416. 419. 425 

 Capitol District Came Bcfuge (N.Y.) 18 

 Capri folioceae 204 

 Carabidoc 213 



carbohydrate, a food component 236. 238. 239, 240 

 Caret 198. 203 

 Carex crinita 203 

 Carex debilis tar. rudgci 203. 222 

 Carex gracUlima 222 

 Carex intumescens 203, 222, 845 

 Carex lurida 845 

 Carex viridula 222 

 Cariboo Mountains (Br. Col.) 53 

 Carnegie Institute of Washington 25 

 Carpenter. F. H. 558 

 Carpenter. R. C 102 

 Carpinus 198. 201 

 carrot, wild 193. 848 

 carrying capacity 309, 332. 393. 512, 522. 546. 672. 677 



criteria 523 



definition 523 



observations of others 524 



values recorded by Investigation 523 



variability 524 

 Carticr. J. 46 

 Cartwright. B. W. xxxvi 

 Cascade Range 47 

 rat, house 14. 25, 330. 333. 334, 336. 338. 339. 340. 311. 34^1, 385, 



391. 456. 496. 711.875. 876 

 catbird 420 



caterpillar 101, 182. 195, 212, 224. 231 

 caterpillar, forest-tent 232 

 Catskill Experiment Station (N.Y.) 297. 301, 4-t8, 4.i5, 475. 465. 



492. 502, 504 

 Catskill Forest Preserve (N.Y.) 596. 684 

 Catskill Mountains (N.Y.) 56. 57. 115, 386. 4^18. 599 

 Catskill region (N.Y.) 



characteristics of 115. 217. 596. 694 



cover management in 596 

 Catskill study area (N.Y.), description 695 

 cattle (see livestock) 

 Caulophyllum thalictroides 195 

 causes of fluctuations in grouse abundance (see also productivity) 



571 



general 511. 571. 573 



relation to age composition of population 573 



relation to disease 309. 401, 574. 575 



relation to population density 556, 576, 577 



