512 



INDEX 



TrichostronyyhiK per(jracili!i— continued 



quiescence (luring cold weather, 233 

 metamorphosis, 22-1, 375 ; ii. 101 

 larviE, 22.5 



encystment, 225, 375 

 migrations, 224, 375 



on heather, 225-228 

 experimental administration of, 229 f, 



374 ; ii. 100 ff 

 effect of frost on, 232, 375 

 „ of drought on, 232, 375 

 ,, of sea spray on, 375 ; ii. 1.39 

 maturity and reproduction, 229, 376 ■ 

 methods of destruction, 234 

 Trypanosoma eberlhi, see Trichoiimnas eherthi 



UNnKRs:zKD birds, .377, 472 



VEB.11IN, 10, 177, 443 ff 

 keepers' duties, 443 ff 

 "balance of Nature," 443 

 sometimes beneficial, 445 

 vermin-killing and "disease," 444 

 tracking in snow, 44-3 

 metho<ls of destruction, 444 ff 

 golden eagle, 19, 444, 449 

 fox, 445 f 

 stoat, 446 

 weasel, 447 

 hedgehog, 447 f 

 cat, wild, 447 

 peregrine falcon, 448 

 crow, 448 

 rook, 449 

 jackdaw, 449 

 raven, 449 

 liawks, 450 

 gulls, 450 



Water-drinking by Grouse, discussed, 18, 93 f 



VVater drinking — continued 

 by adults, 18 

 by chicks, 18, 472 

 in hand- reared birds, 481 

 in sickness, 102 



Grouse do not often die of thirst, 2G4 

 artificial supply, 93 f, 389 

 Weasel, as vermin, 447 

 Weather, 9 ff 



effect of, on eggs and young. 9 ; ii. 1.30 

 on nesting, 10 ; ii. 130 f 

 on breeding, 12, 172 

 on chicks, 13 f; ii. 1.30 

 on health of stock, ii. 128, 130 

 on heather, ii. 130 

 Analysis of, during years of Inquiry, ii. 113 ff 

 Weight of Grouse, 1.30 ff 



as test of disease, 130, 1.38, 140, 376, .380 ; ii. Ill 

 as sign of health, 377, 442, 471 

 seasonal changes in, 130 ; chart, 131 

 effect of courtship on, 134, 140 

 of moult on, 135, 137, 141 

 of late hatching on, 140 

 of incul)ation on, 140 

 relation to disease, 135, 141 f, 277, 299 

 effect of Coccidiosis on, 140, 204, 2.55 ; ii. Ill 

 of Strongylosis on, 141, 204; ii. Ill 

 of Helminthiasis on, 142 

 conditions affecting, 140 f 

 in relation to sex, 134, 140, 471 

 local variations in, 143 ; table, 144 f 

 records, 146 

 " White diarrhcea," 2.59, 260, 268 

 Willow Grouse, plumage changes in, 41 



crop contents, 177 

 Wing feathers as guide to age, 64 

 Wire, collision with, 1.53 

 Woods as shelter, 22 



Young and old liirds, proportions of, table, 473 



END OF VOL. 1. 



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