1915 
Bittern, American, 43 
Least, 43 
Blackbird, Bi-colored, 102, 103 
Bi-colored Red-winged, 102 
Brewer, 106, 186 
Cow, 101 
Kern Red-winged, 103 
Nevada Red-winged, 103 
Northwestern Red-winged, 103 
Red-and-white-shouldered, 104 
Red-shouldered, 102 
Red-winged, 102, 103 
~ Rusty, 105 
San Diego Red-winged, 102, 103 
Sonora Red-winged, 103 
Swamp, 102, 103 
Tri-colored, 104 
Tri-colored Red-winged, 104 
White-shouldered, 137 
White-winged, 137 
Yellow-headed, 102 
Black-head, Big, 35 
Little, 36 
Blasipus belcheri, 22 
heermanni, 22 
Blue-bill, 36 
Bluebird, Anabel, 172 
Arctic, 173 
Chestnut-backed, 172 
Mountain, 173 
Rocky Mountain, 173 
San Pedro, 172 
Western, 172 
Bobolink, 100 
Bob-white, 180 
Bombycilla cedrorum, 140 
garrula, 140 
Bonasa sabini, 61 
umbellus, 61 
umbellus sabini, 61 
Booby, 177 
Brewster, 177 
Botaurus exilis, 43 
lentiginosus, 43 
minor, 43 
Brachyotus cassini, 70 
palustris, 70 
Brachyramphus craverii, 175 
hypoleucus, 19, 175 
marmoratus, 19 
Brant, Black, 40 
Black Sea, 40 
Eastern Sea, 40 
INDEX 
Branta bernicla glaucogastra, 40 
canadensis, 178 
canadensis canadensis, 39 
canadensis hutchinsi, 39 
canadensis minima, 40 
canadensis occidentalis, 39, 177, 178 
hutchinsi leucoparia, 40 
minima, 40 
nigricans, 40 
Broadbill, 35 
Bubo magellanicus, 73 
virginianus, 73 
virginianus arcticus, 73 
virginianus icelus, 73 
virginianus pacificus, 73 
virginianus pallescens, 73 
virginianus saturatus, 73 
virginianus subarcticus, 73 
Bucephala albeola, 37 
americana, 36 
clangula, 36 
clangula americana, 36 
islandica, 36 
Buffle-head, 37 
Bull-bat, 84 
Bull-head, 55 
Bunting, Bay-winged, 112 
Beautiful, 137 
Lark, 137 
Lazuli, 136 
Snow, 187 
Buphagus skua, 20 
Burgomaster, 21 
Burion, 107 
Bush-tit, California, 165 
Coast, 165 
Lead-colored, 165 
Butaetes sancti-johannis, 66 
Butcher-bird, 141, 142 
Buteo abbreviatus, 65, 182 
albicaudatus sennetti, 181 
borealis, 65, 181 
borealis calurus, 65 
borealis socorroensis, 65 
californica, 66 
calurus, 65 
cooperi, 181 
elegans, 65 
harlani, 65, 66 
insignatus, 66 
lineatus, 65 
lineatus elegans, 65 
montanus, 65 
obsoletus, 66 
193 
