CONTENTS. Vll 



Pajre 

 Instance in Rooks ...... 70 



The Capocier of Africa 72 



The White-headed Eagle and the Fish-hawk . . 73 

 Magpie and Black-cap . . . . .74 



The Goldfinch, Aberdevine, and Canary . . .78 

 Migratory agitation ...... 80 



The alleged chastity of the Turtle-dove . . .82 

 Anecdote of a Guinea Parrot . . . .84 



CHAPTER V. 

 Peculiarities in Pairing ...... 86 



The Wild Turkey 86 



Fighting of the males . . . . . .88 



Roosts of Wild Turkeys . . . . .89 



Black Grouse 91 



Ruffed Grouse of America . . . . .91 



Pinnated Grouse ...... 94 



Assemblage of Bustards . . . . .97 



Booming of the Bittern 99 



Killing of Ruffs . . . . . . . 99 



Fighting of Ruffs 100 



Cock-fighting 103 



CHAPTER VI. 



Structure of Eggs 105 



Egg-organ, or ovarium . . , . .106 



Embryo egg . . . . . . .107 



Parts of the egg 109 



Use of the white Ill 



Singular mechanism . . . . . .112 



Chemical constituents of an egg . . . .114 



Air-bag in the egg . . . . . .114 



Subventaneous eggs . . . . . .116 



