LIST OF ILLUSTRATIONS
Reading edition
Love-makingFrontispiece
Facing page
The Gorilla preparing for hostilities42
The barometer of maleness—among the Apes44
Weapons of offence52
Manchurian Wapiti “calling”54
Group of Beisa Oryx60
Eland Cows64
American Bison64
Elephants70
Head of male Wart-hog72
Male and female Babirusa72
Somali Zebras72
Giraffe72
Californian Sea-lions, or Eared Seals82
Elephant Seal88
Northern Elephant Seal88
“The Peacock in his pride”96
Peacock Pheasant96
Patterns which puzzled Darwin98
The “Strutting Turkey”100
The display of the Great Bustard100
Some of Fortune’s favourites104
The love-making of the Prairie Hen110
Grades of evolution in the syrinx or organ of voice in the males of Surface-feeding and Diving-ducks126
Fighting for territory140
The display of the Grasshopper Warbler142
The display of the Sun-bittern142
The Kagu in display142
A male-Savi’s Warbler152
Another aspect of the Kagu’s “display”154
Some strange accompaniments of courtship:
The White-headed Bell-bird156
The Umbrella-bird156
Skull of the American white-beaked Pelican156
Head of a Puffin, showing the moulting of the beak sheath156
The Satin Bower-bird and its bower158
The “bower” of the Bower-bird158
The Bearded Lizard166
Bright colours which cannot be attributed to “sexual selection”200
Stridulating organs, etc.218
Crickets and May-flies220
Male Astia displaying before the less brilliant female242
Male Icius displaying242
Scorpions252
Death of the male Scorpion254
The female Mantis devouring her mate254
The “Fiddler-crab” among mangrove roots258
The “Fiddler-crab”258
Some remarkable devices262
Some remarkable methods of “courtship”268
THE COURTSHIP OF ANIMALS