496 
Vertebree (continued) 
function of, 196; Jabiru, neck 
vertebrie of, 72; Ostrich, 69, 71; 
Ostrich-tail, 402 
pelvic, of American Flamingo, 76; 
alligator (young), 76; Bald Eagle, 76 
of shark, 68; of tail, 75 
Vireo, 144; iris of eye of, 256 
Vorticlla, 463, 464 
Vulture, colour in young Turkey, 317; 
flight of, 328, 330, 331, 332; King, 
head of, 272, 273; sense of sight in, 
205; toes of, 377; Turkey, in flight, 
331 
W 
Wading birds, number of eggs laid by, 
438 
Wagtail, tail of, 413 
Walrus, brain of, 200 
Warbler, life-habits of Black-and-white, 
366; Black-throated Green, 366; Mag- 
nolia, 366; Myrtle, 364; Pine, 366; 
Worm-eating, 163; Yellow Palm, 363 
Warbler-bush, wings of, 347 
Warblers, evolution of, 361-367 
Water-birds, number of eggs laid by, 
436, 437, 438 
Wattles, of Bell-bird, 273; Condor, 271; 
Wild Turkey, 273, 275; King Vulture, 
272, 273 
Waxbill, African, abnormal number of 
eggs laid by, 444 
Web of toes, of Flamingo, 388; Sea- 
birds, 389; Semipalmated Sandpiper, 
384 
Weight of birds, 285, 286; 
dactyls, 285 
Whale, food of, 148; tail of, compared 
with that of bird, 405 
Whydah-finch, tail of Paradise, 415, 416 
Windpipe, see Trachea 
Wing, bones of, 95; change of function 
in, 337; compared with arm of man, 
94; evolution of, 91-97, 319; feather 
divisions of, 320; framework of, 91- 
97; noise of, 345, 347; spurs of, 346, 
347; strokes of Hummingbird, 82; 
use of, in defence, 337 
of Ptero- 
Index 
Wing of, Albatross, 320, 321, 325, 332; 
Great Auk, 339, 340; Racor-billed 
Auk, 339, 340; Cassowary, 321, 337, 
338; Young Catbird, 322; Condor, 
324, 326, 332; Steamer Duck, 337; 
Snowy Egret, 350; West African 
Goatsucker, 359; Canada Goose, 346; 
Young Canada Goose, 322; Spur- 
winged Goose, 346, 347; Rviffed 
Grouse, 347; Herring Gull, 328; Young 
Green Heron, 320, 323; Great White 
Heron, 321; Sleeping Heron, 344; 
Hummingbird, 320, 321, 325; Mallard, 
47; Murrelets, 339; Young Osprey, 
322, 351; Ostrich, 321, 337, 338, 330; 
Twelve-wired Bird of Paradise, 348; 
Parrot, 322; Parrot Owl, 333; Pen- 
guin, 321, 341, 342, 343; Fheasant, 
323, 324, 327; Screamer, 346; Black 
Skimmers, 324; English Sparrow, 46; 
Spoonbill, 350; Trumpeter Swan, 346; 
Tern, 352; Bush Warbkler, 347; Wood- 
cock, 348, 349; Turkey Vulture, 331 
Wish-bone, see Clavicle 
Woodcock, bill of, 222; eyes of, 221, 256; 
sense of sight in, 208; sense of touch 
in, 219, 221, 222; wing-song of, 348 
Woodhewer, tail of, 410 
Woodpecker, tail of 410, 411, 412; 
nest and eggs of Hairy, 445; char- 
acter of egg-shell of, 460; colou- of 
eggs of, 444; function of saliva in, 
118; tongue of, 122; bill of, 245; 
crest of, 264; flight of, 329; feet of, 
370 
Wren, Marsh, colour of eggs of, 446; 
tail of, 411 
Wrist-bones of bird, 92; of man, 92 
x 
X-ray photograph of Pigeon, 63 
Y 
Yellow-throat, life-habits of Maryland, 
362 : 
Zygodactyl toes, 369, 370, 371, 372 
