Vol. It., Plate 13. 



^HBH 



TWO-FIFTHS NATURAL SIZE (FEATHERS NATURAL SIZE). 



1, Adult female, summer, 2, Adult male, summer, 3, Adult male, autumn, of the 

 Scottish Ptarmigan < Lagopus m. millaisi). 4, Adult male, summer, of the British 

 Black Grouse (Lyrurus t. britannicus), 5, Feathers from chin of adult male, winter, 

 6, Feathers from same position, adult male, summer, of the Capercaillie (Tetrao u. 

 urogallus). 7, Adult female, summer, 8, Juvenile of the Common Partridge (Perdix 

 p. perdix). 9, Juvenile of the Red-legged Partridge (Alectorisr. rufa). 10, Juvenile 

 of the Water-Rail {Rail us a. aquaticus). 



[Face p. 864.] 



