512 



INDEX 



Trichoxtrorujylus pergracilis continued 



quiescence during cold weather, 233 

 metamorphosis, 224, 375 ; ii. 101 

 larvae, 225 



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. 139 

 maturity and reproduction, 229, 376 

 methods of destruction, 234 

 Trypunosoma eberthi, see Trichomonas eberthi 



UNDERSIZED hirds, 377, 472 



VERMIN, 16, 177, 443 ff 

 keepers' duties, 443 ff 

 " balance of Nature," 443 

 sometimes beneficial, 445 

 vermin -killing and " disease," 444 

 tracking in snow, 443 

 methods 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 

 hawks, 450 

 gulls, 450 



WATER-DRINKING by Grouse, discussed, 18, 93 f 



Water drinking continued 

 by adults, 18 

 by chicks, 18, 472 

 in hand- reared birds, 4!!1 

 in sickness, 102 



Grouse do not often die of thirst, 264 

 artificial supply, 93 f, 389 

 Weasel, as vermin, 447 

 Weather, 9 ff 



effect of, on eggs and young, 9 ; ii. 130 

 on nesting, 10 ; ii. 130 f 

 on breeding, 12, 172 

 on chicks, 13 f; ii. 130 

 on health of stock, ii. 128, 130 

 on heather, ii. 130 



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

 Weight of Grouse, 130 ff 



as test of disease, 130, 138, 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 incubation on, 140 

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

 effect of Coccidiosis on, 140, 204, 255 ; 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 diarrhoea," 259, 260, 268 

 Willow Grouse, plumage changes in, 41 



crop contents, 177 

 Wing feathers as guide to age, 64 

 Wire, collision with, 153 

 Woods as shelter, 22 



YOUNG and old birds, proportions of, table, 473 



END OF VOL. 1. 



PRINTED AT THE EDINBURGH PRESS, 9 AND 11 YOUNG STREET. 



