INDEX, 
Feathers 82, 84, 85, 109 
Feet of birds 118 
Females, full suites of 14 
Femoral falcon 5-39 
Femoro-caudal 195 
Femur 119 
Fenestra 
oralis 153, 154, 185 
rotunda 185 
Ferrugineous 
buzzard 551 
owl 514 
sandpiper 632 
Fibula 119 
Fibulare 120 
Field 
lark 406 
naturalist's duties 21 
omitholog}'- 1 
plover 598, 599, 641 
sparrow 380 
work 9 
Fiery-red cardinal 394 
Fighting sandpipers 640 
Filoplumaceous feathers 85 
Filoplumes 86 
Finch 
alien's rosy 350 
arizona summer 374 
bachman's summer 373 
baird's rosy 351 
blanding's 398 
brandt's rosy 351 
boucard's summer 375 
bay-winged summer 375 
black-throated 376 
bell's 376 
cassin's purple 347 
cassin's summer 374 
crimson 346 
crimson-fronted 347 
florida sea-side 368 
grass 364 
green 398 
house 347 
Illinois summer 373 
indigo 391 
lazuli 391 
lincoln's 370 
nelson's sharp-tailed 368 
painted 391 
pallas's rosy 352 
pine 354 
purple 346 
purple painted 391 
ridgway's rosy 350 
rufous-crowned summer 374 
sea-side 367 
sharp-tailed 368 
swainson's rosy 351 
western grass 365 
Finches 339 
painted 390 
rosy 350 
summer 373 
Fire-bird 408 
Fire-crowned flycatchers 444 
Fish 
crow 417 
hawks 556 
Fisher's petrel 780 
Fishing 
ducks 716 
eagles 554 
Fissirostral 101 
Fixtures 25, 27 
Flag of hawks 123 
Flamingoes 678 
Flammulated owl 506 
Flanks 95 
Flaps of toes 98 
Flesh-footed shearwater 785 
Flexion of wing 106, 109 
Flexor 
digitorum perforatus 195 
longus hallucis 193 
muscles 109 
Flicker 493 
mexican 493 
Flickers 491 
Flight-feathers 88, 109, 111 
Flocculus 176 
Flocking fowl 701 
Florida 661 
barred owl 510 
coerulea 661 
cormorant 727 
crow 417 
crow blackbird 414 
dusky duck 692 
gallinule 675 
heron 658 
jay 423 
quail 591 
sea-side tinch 368 
screech owl 506 
wren 277 
Flycatcher 
acadian 441 
arkansaw tyrant 433 
ash-throated crested 436 
black pewit 437 
beardless 441 
cassin's tyrant 433 
cooper's large-billed crested 
435 
couch's tyrant 434 
coues' 439 
derby 430 
dirty little 443 
forked-tailed 431 
gray little 443 
great crested 434 
green-crested 441 
hammond's 443 
lawrence's crested 436 
little buff-breasted 443 
little western 442 
least 442 
olive-sided 438 
pewee 437 
pewit 437 
rufous-tailed crested 435 
say's pewit 437 
small green-crested 441 
sulphur-bellied striped 431 
swallow-tailed 431 
train's 441 
vermilion 444 
western wood pewee 440 
western yellow-bellied 442 
wood pewee 439 
Wright's 443 
yellow-bellied 442 
Flycatchers 
american 428 
ash-throated 434 
beardless 443 
crested 434 
derby 430 
fire-crowned 444 
king 432 
Flycatchers 
little olivaceous 440 
pewit 436 
rufous-tailed 434 
striped 431 
swallow-tailed 431 
true tyrant 428 
wood 'pewee 438 
Flycatching thrush 
townsend's 329 
Flycatching thrushes 328 
Flycatcliing warbler 
black-capped 313 
Canadian 314 
hooded 313 
painted 315 
red-fronted 314 
Flycatching warblers 312, 313 
rose 314 
Fly-snapper, shining 328 
Fly-snappers 327 
Fontanel les of sternum 144 
Foot 118 
integument of 124 
modifications of 129 
plumage of 122 
Foramen 
lacerum 160 
magnum 156 
of monx-o 175 
ovale of skull 156 
ovale of heart 196 
Forceps 25, 52 
Forearm 106, 107 
Fork-tail petrels 781 
gray 781 
hornbv's 782 
sooty 782 
Forked-tailed 
flvcatcher 431 
gull 753 
Forms, generalized 76 
specialized 76 
Formulation of knowledge 78 
Fornix 176 
F'orster's tern 763 
Fossa, nasal 104 
Fossil birds 62, 821 
cretaceous 825 
jurassic 829 
tertiary 822 
Four-toed plover 598 
Fowls 571, 573 
pigeon-toed 572 
true 573 
Fox sparrow 
eastern 385 
large-billed 386 
slate-colored 386 
townsend's 385 
Fox sparrows 385 
Francolinus 576 
Franklin's 
rosy gull 751 
spruce grouse 579 
Fratercula 800 
arctica 802 
corniculata 801 
glacialis 803 
Fregetta 782 
grallaria 783 
Fresh-water 
ducks 689 
marsh hen 672 
Frigates 730 
Fringe-footed phalaropes 612 
