INDEX 



Lophodytes cucullatus, 478. 

 Lophortyx californica, 493. 

 Longspur, Alaska, S61. 

 Longspur, Chestnut-collared, 561. 

 Longspur, McCown's, 562. 



Macrorhamphus griseus scolopac- 



eus, 487. 

 Magpie, 532. 

 Mallard, 478. 

 Mareca americana, 479. 

 Marila affinis, 480. 

 Marila americana, 480. 

 Marila collaris, 480. 

 Marila valisineria, 480. 

 Meadowlark, Western, 543. 

 Melanerpes erythrocephalus, 517. 

 Meleagris gallopavo merriami, 495. 

 Melospiza georgiana, 572. 

 Melospiza lincolni lincolni, 572. 

 Melospiza melodiajuddi, 572. 



Nettion carolinense, 479. 

 Night Hawk, Western, 520. 

 Nucifraga columbiana, 540. 

 Numenius americanus, 489. 

 Xutcracker, Clarke's, 540. 

 Nuthatch, Pygmy, 495. 



Oidemia deglandi, 480. 



Olor columbianus, 481. 



Oporornis tolmiei, 586. 



Oreoscoptes montanus, 590. 



Oreospiza chlorura, 573. 



Oriole, Bullock's, 545. 



Osprey, 505. 



Otocoris alpestris leucolaema, 530. 



Otus asio aikeni, 507. 



Otus asio maxwelliae, 506. 



Otus flammeolus, 508. 



Ousel, Water, 588. 



Oven-bird, 586. 



Owl, Aiken's Screech, 507. 



Loon, 476. 



Loon, Black-throated, 476. 

 Loxia curvirostra minor, 554. 

 Loxia curvirostra stricklandi, 554. 



Melospiza melodia montana, 571. 

 Merganser, American, 478. 

 Merganser, Hooded, 478. 

 Mergus americanus, 478. 

 Micropalma himantopus, 487. 

 Mimus polyglottos leucopterus, 591. 

 Mniotilta varia, 582. 

 Mockingbird, Mountain, 590. 

 Mockingbird, Western, 591. 

 Molotrus ater, 542. 

 Mud-hen, 484. 

 Myadestes townsendi, 599. 

 Mycteria americana, 482. 

 J.Ij'iarchus cinerascens, 526. 

 Myiochanes richardsoni, 528. 



Nuthatch, Red-breasted, 495. 

 Nuthatch, Rocky Mountain, 495. 

 Xuttallornis borealis, 527. 

 Nyctea nyctea, 510. 

 Xycticorax nycticorax navius, 483. 



Owl, Arctic Horned, 510. 



Owl, Barn, 506. 



Owl, Burrowing, 511. 



Owl, Flammulated Screech, 508. 



Owl, Long-eared, 506. 



Owl, Prairie Dog, 511. 



Owl, Rocky Mountain Pygmy, 512. 



Owl, Rocky Mountain Screech, 505. 



Owl, Saw-whet, 506. 



Owl, Short-eared, 506. 



Owl, Snowy, 510. 



Owl, Spotted, 506. 



Owl, Western Horned, 510. 



Oxyechus vociferus, 490. 



