INDEX 



409 



Warbler, 255, 256 



blackpoll, 227, 272 



Kennicott's willow, 110, IJ^l, 260, 

 275, 283, 315 



myrtle, 110, 147, 226 



Old World, 102, 147, 221 



orange-crowned, 224 



pileolated Wilson's, 110, 147, 228 



willow, 102, 110 



wood, 110, 147, 223, 261, 268 



yellow, 110, 147, 225 

 Waterthrush, northern, 227, 229 

 Watson, C. E. 297 

 Waxwing, 108, 222 



Bohemian, 108, 222 

 Weasel, 340, 341 



least, 340 

 Weber, Neal, v, 24 

 Weight, coefficients of variance of, 324 



diurnal changes in, 325 



dowitcher, 73 



laying females 191, 196, 219, 226, 

 236, 240 



local differences in, 56, 57 



migration and fat, 322, 328 



sex differences in, 64 



white-crowned sparrow, 121, 236 

 Weigold, Hugo, 321, 328 

 Wetmore, Alexander, v, 55, 89, 284, 



311, 320, 332 

 Whaley, Robert, 157 

 Wheatear, 146, 220, 260, 265, 270, 274, 

 314, 379 (graph) 



European, 100, 107, 122, 128, 315 

 Whimbrel, 65, 192, 194 

 Widgeon, American, 38, 171 

 Wien> Sig, President of Wien Alaska 



Airways, iv, v, 5, 22 

 Willett, George, 29 

 Williams, William, 43, 52, 184 



Williamson, Francis, collector, 156, 157, 

 180, 181, 191, 195, 205, 208, 209, 

 210, 217, 218, 219, 224, 226, 227, 

 241 

 Willow, 21 

 Wilsonia pusilla, 257, 307 



pusilla pileolata, 110, 148, 223, 224 



(table), 229, 248, 269, 288 

 pusilla pusilla, 223, 228 (table), 

 248, 269 

 Wolf, 347 

 Woodcock, 64, 192 

 Woodpecker, 85, 142, 145, 207 

 black-backed three-toed, 143 

 downy, 143, 208, 250 

 hairy, 143 

 ladder-backed three-toed, 86, 143, 



207, 251 

 Nelson's downy, 85, 94, 112 

 Wren, house, 309 

 Wrynecks, 85, 142, 207 

 Wynne-Edwards, Vero, Copner, 220 



X, Y, Z 



Xema, sabini, 81, I4I, 247, 253, 267, 276 



Yellowlegs, lesser, 67, 68, 69, 196, 260, 



374 (graph) 

 yukonensis, Bonasa umhellus, 264 



Sayornis saya, 86 (table), 208, 247, 



266, 269, 288 



zaboria. Passer ella iliaca, 122, 231 

 (table), 238 (table), 248, 269, 

 288, 345, 371 (graph) 

 Zonotrichia atricapilla, 148, 248, 269 



leucophrys gambelii, 119, 231 (table), 

 235 (table), 238 (table), 248, 269, 

 288, 303, 322, 323, 345, 370 

 (graph), 382 (graph), 386 (graph) 



leucophrys leucophrys, 122, 307, 328 



leucophrys nutialli, 238 



leucophrys pugetensis, 237, 238, 305 



o 



