468 



INDEX 



Vermin contintieil. 

 jackdaw, 409 

 raven, 410 

 hawks, 410 

 gulls, 410 



WATER-DRINKING l>y Gnmse, discussed, 



20 f, 104-107 

 by adults, 105 f, 13., 

 by chicks, 20, 105, 138, 261 

 in hand-reared birds, 21, 105, 451 

 in sickness, 255 

 artificial supply, 330, 398 

 Weasel, as vermin, 408 

 Weather, 9 ff, 27-" fi' 

 effect of, on eggs, 13 

 on nesting, i) 

 on breeding, 13, 283 

 on chicks, 15 



on health of stock, 24, 275 ff 

 on heather, 275 ff 

 Analysis of, during years of Inquiry, 



273 ff 

 Weight of Grouse, 32 



Weight of Grouse continued. 

 as test of disease, 157, 162, 217,240,326 

 as sign of health, 33 

 seasonal changes in, 33 ff, 38, 40 

 effect of courtship on, 33 ff, 38 

 of moult on, 36 f 

 of late hatching on, 37 

 of incubation on, 36, 38 

 relation to disease, 157, 162, 217 

 effect of Coccidiosis on, 256 

 of Strongylosis on, 157, 217 

 of Helminthiasis on, 219 

 in relation to sex, 33 ff 

 local variations in, table, 39 

 records, 40 



" White diarrhoea," 2C>1) 

 Willow Grouse, 69 



crop contents, 144 

 Wing feathers as guide to age, 77 

 Wire collision with, 119 ff 

 Woods as shelter, 25 



YOUNG and old birds, proportions of, 

 table, 440 



FINIS 



PRINTED AT THK KDIM'.l I{(;II PIM>S, 9 AND II Y<M.\<; STUKKT, 



