LIST OF ILLUSTRATIONS 



PLATE 



I. PAIR OF RED GROUSE IN SUMMER WITH YOUNG CHICKS .... Front I apiece 



II. MALE GROUSE, BLACK TYPE, IN FULL WINTER PLUMAGE . . . tofaeejJOge 34 



III. MALE GROUSE, RED TYPE, IN FULL WINTER PLUMAGE .....,, 34 



IV. MALE GROUSE, WHITE SPOTTED BIRD OF RED TYPE .....,, 34 

 V. MALE GROUSE, RED TYPE, IN FULL WINTER PLUMAGE WITH A FEW BLACK CENTRED 



FEATHERS OF THE PREVIOUS AUTUMN PLUMAGE .....,, 35 



VL MALE GROUSE SHOWING MARKED BEGINNING OF THE AUTUMN PLUMAGE ON HEAD 



AND NECK . . . . . . . . . . . ,, 36 



VII. MALE GROUSE CHANGING FROM WINTER TO AUTUMN PLUMAGE . . ,, 36 



VIII. FEMALE GROUSE, BLACK TYPE, IN AUTUMN PLUMAGE ...... 44 



IX. FEMALE GROUSE, RED TYPE, CHANGING FROM WINTER TO SUMMER PLUMAGE . ,, 45 



X. FEMALE GROUSE IN FULL BREEDING PLUMAGE ......,, 45 



XI. FEMALE GROUSE IN FULL SUMMER PLUMAGE . . . . . . 46 



XII. FEMALE GROUSE, RED TYPE, FEATHERS FROM FLANKS .....,, 46 



XIII. FEET OF RED GROUSE: (1) NEW WINTER FEATHERS AND NAILS; (2) FULL WINTER 



PLUMAGE ; (3), (4), (5) AND (6) SHOWING STAGES IN MOULTING OF NAILS . ,, 46 



XIV. FEMALE GROUSE, SHOWING BARE PATCH OF SKIN AND DOUBLE LINE OF BARRED 



FEATHERS ON ABDOMEN . . . . . . . . . ,, 47 



XV. FEMALE GROUSE, RED TYPE, WORN UPPER TAIL COVERTS . . . . ,, 47 



XVI. HEADS OF (1), (2), FEMALE GROUSE; (3), (4), MALE GROUSE; (5) PTARMIGAN SHOWING 



SUPRA-ORBITAL COMBS ......... 48 



XVII. HEAD OF BLACKCOCK SHOWING SUPRA-ORBITAL COMB .....,, 49 



XVIII. MALE GROUSE SHOWING ABNORMAL ERYTHHISM ....... 60 



XIX. FEMALE GROUSE, BUFF-BARRED TYPE . . . . . . . ,, 60 



XX. FEMALE GROCSE, ABNORMAL YELLOW VARIETY . . . . . ,, 60 



XXI. FEMALE GROUSE, GREY VARIETY ........,, 60 



XXII. FEMALE GROUSE, GREY VARIETY . . . . . . . . ,, 60 



XXIII. TYPES OF HEATHER . . . . . . . . . . ,, 71 



XXIV. PLANTS EATEN BY .THE GROUSE (4 Figures) ......,, 86 



XXV. PLANTS EATEN BY THE GROUSE (4 Figures) . . . . . 87 



XXVI. DIAGRAM OF ALIMENTARY TRACT ........,, 101 



XXVII. ALIMENTARY TRACT, C.ECUM, RECTUM, GIZZARD, DUODENUM, SMALL INTESTINE . ,, 102 



XXVIIrt. ALIMENTARY TRACT I If SITU . . . . . . . . ,, 103 



XXVIII. OECUM, DUODENUM, ETC. . . ...'... 104 



XXIX. RECTUM AND SMALL INTESTINE ........,, 115 



XXX. C^ECA .............. 117 



xxxi. C;ECA AND KIDNEYS ............ 118 



TEXT-FIG. 1. FRACTURED HUMERUS AND SCAPULA RE-UNITED .... page 154 



,, 2. THE SAME BONES UNINJURED . . . . . . ,, 154 



,, 3. FRACTURED AND RE-UNITED BREASTBONE OF A GREY HEN . . 158 



ix 



