638 
oO. 
Oaxaca Sparrow, 430. 
obscura, Anas, 91, 92. 
Aphelocoma californica, 600. 
Polioptila cserulea, 612. 
Procellaria, 61. 
obscurus, Dendragapus, 195. 
fuliginosus, Dendragapus,196, 
insularis, Myadestes, 573. 
Molothrus ater, 367. 
Myadestes, 573. 
occidentalis, Myadestes, 573. 
Perisoreus, 360. 
Puffinus, 61. 
Regulus, 568. 
richardsonii, 
196. 
Vireo huttoni, 607. 
obsoletus, Rallus, 137. 
Salpinctes, 548. 
ocai, Amazilia, 317. 
occidentale, Syrnium, 259. 
occidentalis, Achmophorus, 4, 583. 
Ammodramus henslowi, 601. 
Ardea, 128. 
Branta canadensis, 117. 
Certhia, 558. 
familiaris, 557, 558. 
Coecyzus americanus, 273. 
Dendroica, 513. 
Ereunetes, 162. 
Geothlypis, 523. 
trichas, 523, 524, 
Harporhynchus curvirostris, 
545. 
Dendragapus, 
Larus, 28, 29. 
Methriopterus 
545. 
Myadestes obscurus, 573. 
Parus atricapillus, 563. 
Sialia mexicana, 612. 
oceanicus, Oceanites, 71. 
Oceanites, 56, 71. 
gracilis, 71. 
oceanicus, 71. 
Oceanitina, 56. 
Oceanodroma, 56, 70. 
eryptoleucura, 71. 
furcata, 70. 
homochroa, 71. 
hornbyi, 70. 
leucorhoa, 71. 
macrodactyla, 534. 
macrodactyla, 534. 
markhami, 71, 
melania, 70, 
socorroensis, 534, 
ocellata, Meleagris, 207. 
Ocellated Partridge, 194. 
Thrasher, 544, 
Turkey, 207. 
ocellatus, Cyrtonyx, 194, 
Harporhynchus, 544, 
Ortyx, 194, 
sumichrasti, Cyrtonyx, 194, 
ochracea, Spizella monticola, 418. 
ochraceiceps, Hylophilus, 479. 
Ochraceous-fronted § Hylophilus, 
479, 
-rumped Seedeater, 450, 
Vireo, 476. 
eurvirostris, 
INDEX. 
ochraceus, Vireo, 476. 
ochropus, Totanus, 166. 
Tringa, 166. 
Ochthodromus, 175. 
ocularis, Motacilla, 533, 
Odontoglosse, 1, 121. 
cenanthe, Saxicola, 580. 
Cnops pernigra, 221. 
Cstrelata brevirostris, 66. 
externa, 68. 
gularis, 67. 
hypoleuca, 534, 
jamaicensis, 66. 
kidderi, 67. 
pheopygia, 65. 
sandwichensis, 65, 
Oidemia, 86, 110. 
americana, 111. 
deglandi, 112. 
deglandii, 112. 
fusca, 112, 
nigra, 111. 
perspicillata, 113, 
stejnegeri, 112, 
Old-squaw, 106. 
olivacea, Dendroica, 494, 
Emberiza, 451, 
Euetheia, 451. 
pusilla, Huetheia, 451. 
Olivaceous Flycatcher, 335. 
olivaceus, Regulus satrapa, 568. 
Vireo, 469, 470. 
olivascens, Myiarchus lawrenceii, 
Olive- backed Thrush, 575. 
-sided Flycatcher, 337. 
Warbler, 494. 
Olor, 88, 120. 
bewickii, 120. 
buccinator, 120, 
columbianus, 120, 
cygnus, 120. 
One-banded Hawk, 229, 
onocrotalus, Pelecanus, 81, 
opisthomelas, Puffinus, 60. 
Oporornis, 520. 
formosa, 487, 
Orange-crowned Warbler, 488. 
oratrix, Amazona, 594, 
Orchard Oriole, 376. 
Oregon Chickadee, 563. 
Jay, 360. 
Junco, 424, 
Ruffed Grouse, 198. 
Towhee, 437. 
Vesper Sparrow, 601. 
oregonus, Junco hyemalis, 424, 
Pipilo maculatus, 437. 
orececus, Dryobates pubescens, 597. 
Oreophasinzg, 208, 
Oreophasis, 208. 
Oreortyx, 185, 190. 
pictus, 191. 
confinis, 588, 
plumiferus, 191. 
Oreospiza, 439, 605. 
chlorura, 605. 
Oreothlypis, 481. 
superciliosa, 481, 
Oriole, Abeille’s, 378. 
Arizona Hooded, 376, 
Audubon’s, 374, 
Oriole, Baltimore, 377. 
Black-headed, 374. 
Bullock’s, 378, 
Fiery, 376. 
Hooded, 375. 
Orchard, 376. 
Scott’s, 373. 
Strickland’s, 375, 
Wagler’s, 375. 
Orizaba Yellow-throat, 525. 
ornatus, Calcarius, 405, 406. 
Ornismya abeillei, 304. 
cinnamomea, 318, 
eximia, 304. 
henrica, 310. 
pampa, 304, 
rhami, 304. 
Ornithion, 327, 345. 
imberbe, 346. 
ridgwayi, 346, 
Oroscoptes, 538, 541. 
montanus, 541. 
Orpheus czerulescens, 539, 
Ortalida cinereiceps, 209, 
leucogastra, 208. 
plumbeiceps, 209. 
poliocephala, 209, 
wagleri, 208, 
Ortalis, 208. 
cinereiceps, 209, 
derbianus, 208. 
leucogastra, 208. 
maccalli, 209. 
plumbeiceps, 209. 
poliocephala, 209, 
vetula, 209. 
pallidiventris, 209. 
plumbeiceps, 209. 
wagleri, 208. 
Orthorhynchus helenz, 313. 
Ortyx castaneus, 187, 
coyolcos, 189. 
cubanensis, 188, 
elegans, 193. 
fasciatus, 193. 
macroura, 184, 
nigrogularis, 190. 
ocellatus, 194, 
pectoralis, 189. 
oryzivorus albinucha, Dolichonyx, 
366. 
Dolichonyx, 366. 
osceola, Meleagris gallopavo, 590. 
Oscines, 321 
Osprey, American, 255, 
Ossifraga, 53,57. 
gigantea, 57. 
ossifragus, Corvus, 363. 
ostralegus, Heematopus, 181. 
Otocoris, 346, 347. 
alpestris, 348, 
adusta, 599. 
arenicola, 349. 
chrysolema, 349, 
giraudi, 349. 
insularis, 599, 
leucoleema, 348, 
merrilli, 599, 
pallida, 599. 
praticola, 348, 
rubea, 349, 
strigata, 349. 
