236 
INDEX. 
Sialia arctica 223. 
mexicana bairdi 223. 
sialis 223. 
sinuatus, Corvus corax 210 
Siskin, Pine 187, 213. 
Sitta canadensis 222. 
carolinensis aculeata 222. 
pygmaea 222. 
Slate-colored Sparrow 187, 216. 
Slender-billed Nuthatch 222. 
Snipe, Wilson’s 188,199. 
Snowflake 214. 
Snow Goose, Greater 196. 
Lesser 196. 
Snowy Heron 198. 
Owl 206. 
Plover 201. 
socialis arizonse, Spizella 215. 
Solitaire, Townsend’s 223. 
solitarius, Helodromas 200. 
plumbeus, Vireo 218. 
Solitary Sandpiper 200. 
Somateria dresseri 182,184, 224. 
Song Sparrow, Mountain 216. 
Sora 199. 
Sparrow Hawk, American 204. 
Desert 205. 
Sparrow, Cassin’s 215. 
Desert 215. 
European House 213. 
Harris’s 214. 
LeConte’s 187, 214. 
Lincoln’s 216. 
Mountain Song 216. 
Slate-colored 187, 216. 
Western Chipping 215. 
Field 215. 
Lark 214. 
Savanna 214. 
Tree 215. 
Vesper 214. 
White-crowned 214. 
Spatula olypeata 194. 
sparverius deserticolus, Palco 179, 182. 
183,190, 205. 
Falco 204. 
Speotyto cunicularia hypogsea 206. 
Sphyrapicus thyroides 207. 
varius nuchalis 207. 
Spinus pinus 213. 
Spiza americana 217. 
Spizella socialis arizonse 215. 
monticola ochracea 215. 
pusilla arenacea 215. 
sponsa, Aix 194. 
Spotted Sandpiper 200. 
spragueii, Anthus 181, 221. 
Sprague’s Pipit 221. 
Spurred Towhee 216. 
squamata, Callipepla^l82, 183, 02. 
Squatarola squatarola 201. 
Steganopus tricolor 199. 
stellaris, Cistothorus 181, 222. 
stelleri macrolopha, Cyanocitta^210. 
Stellula calliope 183,184,185, 208. 
Sterna antillarum 193. 
forsteri 193. 
hirundo 181,193. 
tschegrava 193. 
Stilt Sandpiper 199. 
streperus, Chaulelasmus 194. 
striata, Dendroica 219. 
striatulus, Accipiter atricapillus 204. 
stricklandi, Loxia curvirostra 212. 
strigatus, Chondestes grammacus 214. 
Strix pratincola 205. 
Sturnella magna neglecta 211. 
subis, Progne 217. 
subruficollis, Tryngites 200. 
Surf Scoter 196. 
swainsoni, Buteo 204. 
Hylocichla ustulata 223. 
Swainson’s Hawk 204. 
Swallow, Barn 217. 
Cliff 217. 
Tree 217. 
Violet-green 217. 
Swan, Whistling 196. 
Swift, White-throated 208. 
Sylvania pusilla pileolata 184. 
Symphemia semipalmata inornata 200. 
Syrnium nebulosum 183, 185, 190, 205, 
224. 
Tachycineta bicolor 217. 
thalassina 217. 
Tanager, Louisiana 217. 
60 
