Index. 



173 



Shrike, 141-143. 



Northern, 141. 



White-rumped, 143. 

 Sialia, 158. 



arctica, 158. 



mexicana bairdi, 158. 



sialis, 158. 

 Siskin, 124. 



Pine 124. 

 Sitta, 154, 155. 



canadensis, 155. 



carolinensis aculeata, 154. 



pygmasa, 155. 

 Snipe, 46. 



Wilson's, 46. 

 Snowflake, 125. 

 Solitaire, 156. 



Townsend's, 156. 

 Sora, 43. 

 Sparrow, 124, 134. 161. 



Brewer's, 131. 



Chipping, 130. 



Clay-colored, 131. 



European House, 124. 



Gambel's, 129. 



Harris's, 128. 



Lincoln's, 134. 



Mountain Song, 134. 



Sage, 134. 



Savanna, 127. 



Slate-colored, 161. 



Western Chipping, 131. 



Western Field, 161. 



Western Lark, 127. 



Western Savanna, 127. 



Western Tree, 130. 



Western Vesper, 126. 



White-crowned, 128. 



White-throated, 130. 

 Spatula clypeata, 33. 

 Speotyto cunicularia hypogsea, 84. 

 Sphyrapicus, 90. 

 "thyroideus, 90. 



varius, 90. 



varius nuchalis, 90. 

 Spinus pinus, 124. 

 Spizella, 130-131, 161. 



breweri, 131. 



monticola ochracea, 130. 



pallida. 131. 



pusilla arenacea, 161. 



socialis, 130. 



socialis arizonse, 131. 



Stelgidopteryx serripennis, 140. 

 Sterna, 28. 



caspia, 28. 



hirundo, 28. 

 Studying Birds, Note on, 6, 7, 8. 

 Sturnella magna neglecta, 115. 

 Swallow, 140. 



Bank, 140. 



Barn, 139. 



Cliff, 138. 



Rough-winged, 140. 



Tree, 139. 



Violet-green, 139. 

 Swan, 40. 



Trumpeter, 40. 



Whistling, 40. 

 Swift, 96. 



White-throated, 96. 

 Symphemia semipalmata inornata, 50. 



Tachycineta, 139. 



bicolor, 139. 



thalassina, 139. 

 Tanager, 138. 



Louisiana, 137. 



Scarlet, 138. 

 Tern, 28. 



Black, 28. 



Common, 28. 



Forster's, 28. 

 Thrasher, 152. 



Brown, 152. 



Sage, 151. 

 Thrush, 157. 



Alaska Hermit, 157. 



Audubon's Hermit, 157. 



Olive-backed, 157. 



Willow, 157. 

 Titmouse, 161. 



Gray, 161. 

 Totanus, 49, 50. 



flavipes, 50. 



melanoleucus, 49. 

 Toxostoma rufum, 152. 

 Towhee, 135. 



Arctic, 135. 



Green-tailed, 136. 



Spurred, 135. 

 Tringa, 47, 48. 



bairdii, 47. 



maculata, 162. 



minutilla, 48. 



