INDEX. 



371 



Auriparus flaviceps, 338. 

 Avocet, American, 146. 

 Aythya, 118. 



a'ffinis, 119. 



americana, 118. 



collaris. 119. 



marila nearctica, 119. 



vallisneria, 118. 



BALDPATE, 116. 

 Baptornis advenus, 359. 

 Bartramia, 157. 



longicauda, 157. 

 Basileuterus, 318. 



belli, 318. 



culicivorus, 318. 

 Basilinna, 227. 



xantusi, 227. 

 Bird, Red billed Tropic, 107. 



Surf, 164. 



Yellow-billed Tropic, 106. 

 Bittern, American, 134. 



Least, 134. 

 Blackbird, Bicolored, 249. 



Brewer's, 253. 



Red- winged, 249. 



Rusty, 253. 



Tricolored, 249. 



Yellow-headed, 249. 

 Bluebird, 346. 



Azure, 346. 



Mountain, 347. 



Western, 346. 



Bluethroat, Red-spotted, 34-,. 

 Bobolink, 247. 



Western, 247. 

 Bob-white, 167. 



Florida, 167. 



Grayson's, 168. 



Mas'ked, 168. 



Texan, 167. 

 Bonasa, 172. 



umbellus, 172. 



umbellus sabini, 173. 



umbellus togata, 172. 



umbellus umbelloides, 172. 

 Booby, 107. 



Blue-faced, 107. 



Red-footed, 108. 

 Botaurinae, 134. 

 Botaurus, 134. 



exilis, 134. 



lentiginosus, 134. 

 Brachyramphus, 80. 



Brachyramphus craveri, 81. 



hypoleucus, 81. 



kittlitzii, 81. 



marmoratus, 80. 

 Brant, 127. 



Black, 128. 

 Branta, 126. 



bernicla, 127. 



canadensis, 126. 



canadensis hutchinsii, 127. 



canadensis minima, 127. 



canadensis occidentalis, 127. 



hypsibates, 364. 



leucopsis, 128. 



nigricans, 128. 

 Bubo, 202. 



leptosteus, 366. 



virginianus, 202. 



virginianus arcticus, 203. 



virginianus saturatus, 203. 



virginianus subarcticus, 202. 

 Bubonidae, 198. 

 Budytes, 319. 



flavus leucostriatus, 319. 

 Bullfinch, Cassin's, 255. 

 Bulweria, 103. 



bulweri, 103. 

 Bunting, Indigo, 288. 



Lark, 290. 



Lazuli, 288. 



Painted, 288. 



Townsend's, 354. 



Varied, 288. 

 Bush-Tit, 337. 



Black-eared, 337. 



Californian, 337. 



Grinda's, 337. 



Lead-colored, 337. 

 Buteo, 187. 



abbreviatus, 189. 



albicaudatus, 189. 



borealis, 187. 



borealis calurus, 188. 



borealis kriderii, 188. 



borealis lucasanus, 188. 



brachyurus, 190. 



buteo, 187. 



cooperi, 353. 



fuliginosus, 353. 



harlani, 188. 



latissimus, 190. 



lineatus, 188. 



lineatus alleni, 189. 



lineatus elegans, 189. 



swainsoni, 189. 



