ON THE CHANGES OF PLUMAGE IN THE RED GROUSE 139 



FEMALES. 



Summer Phtmaye. 



I. Red form. 



2. Black form. 



4- 



White-spotted 

 form. 



Buff-spotted 

 form. 



5. Buff-barred 

 form. 



Feathers of the 

 upper parts 

 black, rather 

 widely mar- 

 gined, barred, 

 and marked with 

 orange b u ff . 

 Chest and flank 

 feathers widely 

 barred with 

 black and buff. 

 Under parts vary 

 according to the 

 type to which 

 each individual 

 belongs, but 

 Nos. 4 and 5 

 are i n d i s t i n- 

 guishable. 



Autumn- Winter Plumage. 





Feathers of the 

 u p per parts 

 mostly rufous 

 chestnut, finely 

 marked and 

 mottled with 

 black. 



Feathers of the 

 upper parts 

 black, indis- 

 tinctly mottled 

 with rufous 

 chestnut. 



"] Upper parts 

 black, with ir- 

 regular bars and 

 mottlings of 

 chestnut and a 

 buff spot at the 

 tip of most of the 



J feathers. 



Feathers of the 

 under parts ditto. 



Feathers of the 

 under parts ditto. 



Feathers of the 

 under parts 

 widely tipped 

 with white. 



Feathers of the 

 under parts 

 mottled with 

 black and chest- 

 nut. 



Plumage similar to the summer dress of 

 the buff-spotted form (No. 4). 



EXPLANATION OF THE PLATES. 

 PLATE V. FEATHERS OF THE RED GROUSE. 



Figs. 1-3. Feathers from the back of a male, Banffshire, 6th June -I, old 



autumn ; 2, old winter ; 3, new autumn. 

 Figs. 4, 5. Feathers from the back of a male, Stirlingshire, December 4, old 



autumn ; 5, new winter. 



Fig. 6. Feather from the back of a male, Yorkshire, September, autumn plumage. 

 Figs. 7, 8. Feathers from the back of a male, County Mayo, November 7, old 



autumn plumage ; 8, new winter. 



Fig. 9. Feather from the back of a male, Perthshire, December, new winter. 

 Fig. 10. Feather from the back of a male, Stirlingshire, loth December, winter 



plumage. 

 Fig. II. Feather from the chest of a male, Stirlingshire, I7th July, autumn 



plumage. 

 Fig. 12. Feather from the chest of a male, Stirlingshire, December, winter 



plumage. 



PLATE VI. FEATHERS OF THE RED GROUSE. 9 



Fig. I. Feather from the back of a female, Ayrshire, 27th April, new summer 



plumage. 

 Fig. 2. Feather from the back of a female, Loch Long, I4th September, new 



autumn plumage. 



