INDEX 
PAGE 
Migration of birds, causes, extent, 
routes 10, 11 
Effect of mountains on 9 
Migratory Birds Convention Act, ef- 
fects and provisions 13 
Mimidae , . 323 
Mimus polygloltos 324 
p. leucopterus 324 
p. polyglotlos 324 
Mniotilta varia 348 
Mockers, gen. description 323 
Mockingbird 324 
Eastern 324 
Western . 324 
Molothrus ater 376 
Moose-bird. See Jay, Canada 303 
Mosquito Hawk. See Nighthawk. . . . 268 
Motacfflidae 335 
Mother Carey's Chickens 
See Petrel, Storm 50 
Wilson's 51 
Mountains, effect of on bird distribu- 
tion 9 
Mud-hen 174 
See also Coot, American 175 
Murre, Common 242 
Atlantic 243 
California 243 
Thick-billed 243 
Brunnich’s 243, 244 
Pallas’. 244 
Murrelet, Ancient 246 
Marbled 245 
Murres, gen. description 241 
M usdvora f orficata 290 
Myadestes townsendi 332 
Mycteria americana 67 
Myiarchus crinitus 290 
Myiochanes richardsoni 295 
r. richardsoni 295 
virens 294 
Mynah, Crested 342 
Nannus hiemalus 319 
h. hiemalus 319 
h. pad ficus 319 
Nephoecetes niger '. . . . 270 
n. borealis 270 
Nettion carolinense . . 91 
crecca 91 
Nighthawk 268 
Eastern 268 
Pacific 268 
Bennett’s 268 
Night- jar. See Nighthawk 268 
Nomenclature, system used 6 
Nudfraga Columbiana 310 
Numenius americanus 189 
Nutcracker, Clarke’s 310 
Nuthatch, Pygmy 316 
Black-eared 316 
Red- breasted 315 
425 
PAGE 
Nuthatch, White-breasted 314 
Eastern 315 
Rocky Mountain 315 
Slender-billed 315 
Nuthatches, gen. description 314 
Nuttallornis mesoleucus 296 
Nyctea nyetea 259 
Nydicorax nydicorax 64 
n. hoactli 65 
Nyroca afiinis 97 
americana 95 
collaris 95 
marila 97 
valisneria 96 
Oberholseria chlorura 391 
Ocean currents, effect of 8 
Oceanites oceanicus 51 
Oceanodroma castro 50 
furcata 50 
leucorhoa 50 
l. beali 50 
l. leucorhoa 50 
Oenanthe oenanthe 332 
o. leucorhoa 332 
Oidemia 106 
americana 108 
Oil, effect on sea fowl. 242 
Old-squaw 101 
Oporornis ayilis 361 
formosus 361 
Philadelphia 362 
tolmiei 362 
Oreortyx pida 165 
p. pida 165 
Oreoscoptes montanus 326 
Oriole, Baltimore 373 
Bullock’s 373 
Orchard 372 
Osprey 140-142 
hlight figured 117 
Otocoris alpestris 297 
a. alpestris 297 
a. arlicola 297 
a. enthemia 297 
a. hoyti 297 
a. leucolerna 297 
a. merrilli 297 
a. pralicola. 297 
a. strigata 297 
Otus asio 256 
a. aikeni 257 
a. kennicotti 257 
a. macfarlanei. 257 
a.naevius.. 257 
flammeolus 257 
Oven-bird 359 
Owd, Acadian 265 
Eastern Saw- whet 265 
Northwest Saw- whet 265 
Queen Charlotte 265 
American Barn 256 
