752 



INDEX 



Asio accipitrinus 488 



Asio flammeus 488 



Asio wilsonianus 486 



Astragalinus 577 



Astragalinus tristis 577 



Astur 458 



Astur atricapillus 458 



Astur atricapillus striatulus. . . . 460 



Asturina 469 



Asturina plagiata 469 



Auk, Little 280 



Auks 279 



Avocet, American 392 



Avocets 392 



Aythya affinis 334 



Aythya americana 332 



Aythya collaris 335 



Aythya marila nearctica 333 



Aythya vallisneria 333 



B 



Baeolophus 



Baeolophus bicolor 



Baldpate (Duck) 



Bald Brant 



Bartramia 



Bartramia longicauda 



Beetle-head 



Birds of Prey 



Bittern, American 



Bittern, Cory's Least. 



Bittern, Least 



Bitterns 



Blackbird, Arctic Red-winged. . 



Blackbird, Brewer's 



Blackbird, Red-winged 



Blackbird, Rusty 



Blackbird, Yellow-headed 



Blackbirds 



Black-breast 



Blackhead (Duck) 



Bluebill (Duck) 333, 



Bluebird 



Bluebird, Mountain 



Bluebirds 705, 



Bobolink 



Bob-white 



Bombycilla 



Bombycilla cedrorum 



Bombycilla garrula 



Bombycillidas 



Bonasa 



Bonasa umbellus 



Bonasa umbellus togata ........ 



Botaurinae 



Botaurus .' 



Botaurus lentiginosus 



Brant 350, 



Brant, Bald 



Brant, Blue 



Brant, White 347, 



Brant Bird. . . 



697 

 697 

 324 

 349 

 418 

 418 

 425 

 448 

 363 

 365 

 364 

 362 



s i 6 



563 



555 

 562 

 554 

 55 

 425 

 333 

 334 



432 

 624 

 625 

 624 

 624 

 436 

 436 

 437 

 363 

 363 

 363 

 353 

 349 

 349 

 348 



Branta 



Branta bernicla 



Branta bernicla glaucogastra. . 



Branta canadensis 



Branta canadensis hutchinsii. . . 

 Branta canadensis minima. 



Broadbill (Duck) 



Bubo 



Bubo virginianus 



Bubo, virginianus pallescens. . . 

 Bubo Virginianus subarcticus. . 



Bunting, Black-throated 



Bunting, Indigo 



Bunting, Painted 



Bunting, Snow 



Butcher Bird 



Buteo 



Buteo borealis 



Buteo borealis calurus 



Buteo borealis harlani 



Buteo borealis krideni 



Buteo latissimus 



Buteo lineatus 



Buteo platypterus 



Buteo swainsoni 



Buteoninae 



Butorides 



Butorides virescens 



Butter-ball (Duck) 



Butter-bill Coot 



Buzzard, Turkey 



Calcarius 



Calcarius lapponicus 



Calcarius pictus 



Calico-back 



Calidris 



Calidris arenaria 



Calidris leucophaea 



Campephilus 



Campephilus principalis 



Canachites 



Canachites canadensis canace . . 



Caprimulgi 



Caprimulgidae 



Cardinal 



Cardinalis 



Cardinalis cardinalis 



Carpodacus 



Carpodacus purpureus 



Catbird 



Catharista 



Catharista atrata 



Catharista urubu 



Cathartes 



Cathartes aura septentrionalis . 



Cathartidae 



Catoptrophorus 



Catoptrophorus semipalmatus. . 

 Catoptrophorus semipalmatus 

 inornatus. . . 



353 

 353 

 35i 

 352 

 352 

 328 

 495 

 495 

 497 

 497 

 613 

 611 

 612 



579 

 628 

 460 

 460 

 463 

 463 

 462 

 467 

 464 

 467 

 465 



338 

 343 

 449 



580 



409 

 409 

 409 



508 

 508 

 435 

 435 



608 

 608 

 608 

 569 

 569 

 682 



449 

 449 

 449 

 449 

 449 

 448 

 416 

 416 



417 



