Index 489 
Feathers (continued), 
Emeu, 36; of embryo of twelfth- 
day, 22; moult of, 40-53 
number of, in tail, of Archeopteryx, 
400; of Cormorant, 400; of Duck, 
400; of Ostrich, 402; of Peatowl, 
402; of Fantail Pigeon, 402 
of Ostrich, 35, 336; papille of nestling, 
21; powder-downs, 37, 38; ptery- 
losis, 39; sheaths of, 26; sheaths 
of young Kingfisher, 29; texture of, 
287-289; function of, in Puff-back 
Shrike, 287; of wing, 320-352; 
worn-oué Hummingbird’s breast, 44 
Feather-ears, of owl, 267, 268 
Feather-tips, in Bobolink, 297; in 
Black Lark, 295, 297; in Snow- 
flake, 297; in English Sparrow, 52, 
53; wearing off of, 52, 53, 297 
Feeding, method of, in Flamingo, 128; 
in Woodcock, 222 
Feet, adaptation of, 361, 362; classifi- 
cation based on, 354, 355; evolu- 
tion of, 353, 358, 361 
Femur, 98 
Fibula, 98 
Fighting, method of, in Ruff, 277, 279, 
280 
Finch, 143; bill of Purple, 249; colour 
change in Purple, 293 
Fins, origin of paired, 96 
Fish, used as food, 153; heart of, 181; 
muscle-flakes of, 78 
Fishing, method of, in Cormorants, 154; 
Frigate-birds, 154; Herons, 156; 
Ixingfishers, 154; Ospreys, 154; Peli- 
cans, 152; Penguins, 154; Snake- 
birds, 154; Terns, 154 
Flamingo, bill of, 128, 234, 235; colour 
change in, 293; foot of, 388; neck of, 
73, 281; sternum of, 80; tongue of, 
126, 127; trachea of, 168, 169 
Flicker, abnormal number of eggs laid 
by, 444; hyoid of, 123, 124; protec- 
tive colouring in young, 302, 303, 304; 
tongue of, 123, 124 
Flight, cf. with swimming, 327; Condor, 
324, 326; Steamer Duck, 337;  cer- 
tain Flyeatchers, 324, 326;  Gold- 
Hummingbirds, 329; Owl Parrot, 33: 
Pheasant, 323, 324; Crested Screamer, 
329; Sparrows, 328; swiftness of, in 
Pigeon, 350; swiftness of, in Swallow, 
352; of Tinamou, 333-336; of Wood- 
peckers, 329; of Vultures, 328, 330, 
331, 332 
Flipper, of Penguin, 341, 342, 343 
Flycatcher, feet of, 360; flight of, 324, 
326; tail of Least, 412 
Food, affecting structure, 164; indu- 
cing intoxication, 163; of Apteryx, 
147; Buzzard, 159; Courlan, 153; 
Creepers, 150, Crows, 153; Ducks, 
147, 153; Bald Eagle, 148; Gulls, 
161; Carrion Hawk, 162; Duck 
Hawk, 159; New Zealand King- 
fisher, 161; Locust-birds, 150-152; 
Osprey, 155; Barn Owl, 158; Bur- 
rowing Owl, 162; Elf Owl, 158; 
Strenuous Owl, 158; Oyster-catcher, 
153; WKkea Parrot, 161; Penguins, 
153; Ptarmigan, 144; Raven, 158; 
Road-runner, 157; Sea-birds, 148; 
Sea-eagles, 157; Secretary-bird, 157; 
Red-winged Starlings, 162, 163; 
Storks, 157; Sugar-birds, 144; Sul- 
phur Tyrant, 161; whales, 148 
Food-pellets of Owl, 132, 133 
Foot, claws of, 368; tendons of, 191, 
192; of alligator, 354; Archeop- 
teryx, 353; bear, 102; of bird cf. with 
man, 99, 100; Caracara, 378; Casso- 
wary, 394, 396; Chewink, 367; Chuck- 
will’s-widow, 369; Cockatoo, 371; 
Coot, 387; Crow, 356; Cuckoo, 372; 
Donkey, 394, 395; Duck, 382, 389, 
390; Golden Eagle, 374, 376; Harpy 
Eagle, 375; Flami-go, 388; Fly- 
catchers, 360; Gallinule 385, 386, 
387; Grebe, 391; Ruffed Grouse, 380, 
381; Rough-legged Hawk, 389; 
387, 388; Hummingbirds, 368; 
Ibis, 102, 385; IXangaroo, 3¢ 
Horned Lark, 367; European House 
Martin, 381: Nuthatch, 359; Oriole, 
360; Osprey, 375; Ostrich, 394, 395, 
396; Burrowing Owl, 373; Snowy 
Owl, 375; Owls, 373, 374; Parrots, 372; 
Passeres, 358, 359; Peacock, 383; 
Brown Pelican, 355; Penguin, 391, 
392; Pheasant, 380; Phalarope, 384; 
Pipit, 367, 368; Plover, 384; Ptar- 
migan, 381; Quail, 380; Raven, 356; 
Rhinoceros-bird, 357; Road-runner, 
373; Rock-jumper, 393; Sand-grouse, 
383; Semipalmated Sandpiper, 384; 
Secretary-bird, 378, 379; Snakebird, 
391; Swallow, 360; Black-necked 
Swan, 390; Swift, 368, 369; Vulture, 
377; Woodpeckers, 370 
Fowl, egg of, 429, 430; Japanese Long- 
tailed, 417, 419; number of eggs laid 
by Jungle, 444; spurs of, 382; tail of 
Jungle, 418 
Fox, aggressive coloration in Arctic, 
309 
Framework, 62-102 
Frigate-bird, method of feeding of, 154 
Frog, egg of, 428; fresh egg of, 462. 
