INDEX. 



371 



Auriparus flaviceps, 338. 

 Avocet, American, 146. 

 Aythya, 118. 



affinis, 119. 



americana, 118. 



collaris. 119. 



marila nearctica, 119. 



vallisneria, 1 18. 



BALDPATE, 116. 

 Baptornis advenus, 359. 

 Bartramia, 157. 



longicauda, 157. 

 Basileuterus, 3r8. 



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. 



Masked, 168. 



Texan, 167. 

 Bonasa, 172. 



umbellus, 172. 



umbellus sabini. 173. 



umbellus togata, 172. 



umbellus utnbelloides, 172. 

 Booby, 107. 



Blue-faced, 107. 



Red-footejd, 108. 

 Botaurinas, 134. 

 Botaurus, 134. 



exilis, 134. 



lentiginosus, 134. 

 Brachyramphus, 80. 



Brachyramphus craveri, 81. 



hypoleucus, Si. 



kittlitzii, 81. 



marmoratus, 80. 

 Brant, 127. 



Black, 128. 

 Branta, 126. 



bernicla, 127. 



canadensis, 126. 



canadensis hutchinsii, 127. 



canadensis minima, 127. 



canadensis occiclentalis, 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, iSS. 



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. 



