4 86 



Index 



226; Woodcock, 219, 221, 222; 

 Woodpeckers, 245 

 Blackbird, down on nestling, 26 

 Blood, circulation of, 182, 183, 184; 

 compared with amoeba, 185; red 

 corpuscles of, 184, 185; white cor- 

 puscles of, 185 

 Bobolink, cause of colour change in 



spring, 297 

 Bob-white, effect of climate on, 293 



295; moult of, 43 



Body, of Herons, 286; Petrels, 286 

 Body-feathers, of Apteryx, 289; Cas- 

 sowary, 288; Snowy Egret, 305, 

 322; Emeu, 36, 289; Ostrich 236, 

 288; Scaled Partridge, 289; Pen- 

 guin, 289; Rock-jumper, 288; 

 Snake-bird, 289 

 Boltenia, notochord of, 67, 67 

 Bones, of embryo chick, 473; hollow- 

 ness of, 175, 176; of mammal skull, 

 103; relation to flight, 176; of skull, 

 107 



Breast-bone, 79-84; evolution of, 79 

 Breast ornament of Wild Turkey, 280 

 Brain, of bird compared with that of 

 crocodile, 200; with that of Tricera- 

 tops; 200; with that of Walrus. 200; 

 embryo, thirty-six hours old, 472; 

 great size in birds, 199, 200, 201; 

 importance of, 198; nerves of, 202; 

 protection of, 196 

 Bulk, birds of largest, 285 

 Bustard, chin-feathers of Great, 267; 



weight of. 285 



Butterfly, eggs of, 428; torn by birds, 147 

 Buzzard, Black-breasted, feeding on 

 Emeu eggs, 159 



Canals, semicircular, 218 



Caracara, head of, 271, 272; foot of, 378 



Carp, compared with Scaled Partridge, 



289, 290 



Carrion Hawk, Chimango, food of, 162 

 Cassowary, 



body feathers of, 288 



eggs of, 436, 453; colour of, 453, 454; 

 character of shell of, 460 



helmet of, 275, 288; lack of tail of, 

 402; tracks of, 396; wing of, 321, 

 337, 338 



Catbird, use of wing in young. 322 

 Caterpillar, used as food by birds, 146 

 Cells, of blood, see Blood; of feathers, 



34; of muscle, see Muscle 

 Cerebellum, 201 

 Chewink, foot of, 367 

 Chicken, stomach glands of, 135 



Chuck-will's-widow, comb on toe o(, 369 

 Circulatory system of pigeon, 183 

 Classification, based on toes, 354, 355 

 Clavicle, function of, 85; of Hoatzin, 86; 



in mammals, 86 

 Claws of foot, 368 



three on wing of, Osprey, 322; Ostrich, 



338, 339; Swan, 322 

 Climate, effect on plumage of, Bob- 

 white, 292, 295; Song Sparrow, 292, 



295; South American Pipit, 295, 296; 



Turkey Vulture, 322; White-throated 



Sparrow, 291, 294; Wood Thrush, 294 

 Cockatoo, feet of, 371; Leadbeater, 



crest of, 260 

 Cocoon, as food, 146 

 Cod, eggs of, 428 

 Collar-bone, see Clavicle 

 Colour, 



of birds, 287; of young birds, 316, 317; 

 blindness, 301; breast of Bleeding 

 Heart Pigeon, 306, 308 



change in moulting of Bald Eagle, 

 296; Scarlet Tanager, 294, 297; 

 Siberian Black Lark, 295, 297 



of eggs, 430 



of feathers, 53-61 ; causes of, 54-56; 

 patterns of, 56-60 



in mammals, 287; phases, double, 314; 

 relation to haunts, 296-314; use of, 

 322 . 

 Coloration, aggressive, see Aggressive 



coloration; protective, see Protec- 

 tive coloration 

 Columella, of Owl, no, 109 

 Comb, of Condor, 271; Domestic Cock, 



274; Heron, 387, 388; on toe of 



Chuck-will's-widow, 369 

 Condor, feathers of, 36; flight of, 324, 



326; wattles of, 271 

 Condyles of skull, 108 

 Coot, foot of, 387 

 Coracoid, function of, 84; in man, 85; 



in reptiles, 84 

 Cord, spinal, 202 

 Cormorant, bill of, 227, 228; character 



of egg-shell of, 460; gullet of, 133; 



iris of, 256; method of fishing of, 154; 



tail feathers of, 400 

 Corpuscles, see Blood 

 Courlan, food of, 153 

 Cuckoo, aggressive coloration of, 311; 



colour of eggs of English, 456, 458; 



foot of, 372 



Curassow, Banded, crest of, 261 

 Crab, used as food, 149 

 Crane, 



Crowned, crest of, 264; head of, 252, 

 265 



Demoiselle, crest of, 267, 295 



