xxviii LIST OF ILLUSTRATIONS 
FIGURE 
73. Bill and tail of Brown Creeper ..... 
74. (a) Bill of White-breasted Nuthatch, ( b ) bill and wing of 
Chickadee ........ 
75. Bill and wing of Golden-crowned Kinglet, ( b ) bill of Blue- 
gray Gnat catcher ....... 
76. ( a ) Bill of Robin, (6) bill and wing of Bluebird 
77. Great Auk ......... 
78. First primaries of (a) Herring Gull, ( b ) Ring-billed Gull, 
(c) Laughing Gull, ( d ) Franklin’s Gull, (e) Bonaparte’s 
Gull. 
79. First primaries of (a) Caspian Tern, ( b ) Royal Tern, (c) 
Common Tern, (d) Arctic Tern, (e) Roseate Tern . 
80. Head of Least Sandpiper ...... 
81. Head of Red-backed Sandpiper ..... 
82. Wing of Solitary Sandpiper ...... 
83. Head of Semipalmated Plover ...... 
84. Head of Wilson’s Plover ....... 
85. Tail of Sharp-shinned Hawk ...... 
86. Tail of Cooper’s Hawk ....... 
87. Primaries of Red-shouldered Hawk ..... 
88. Primaries of Broad-winged Hawk ..... 
89. Foot of Golden Eagle ....... 
90. Foot of Bald Eagle ....... 
91. Tail-feathers of Yellow-billed Cuckoo .... 
92. Tail-feathers of Black-billed Cuckoo .... 
93. Tongue of Pileated Woodpecker ..... 
94. Whip-poor-will ........ 
95. Head of Crested Flycatcher ...... 
96. Head of Prairie Horned Lark ...... 
97. Starling; — Summer plumage . . . . . . 
98. Starling; — Winter plumage ...... 
99. Head of Cowbird ........ 
100. Head of Purple Finch ....... 
101. Head of Redpoll . 
102. Hind-toe of Lapland Longspur ..... 
103. Tail-feathers of Vesper Sparrow ..... 
104. Tail of Grasshopper Sparrow ...... 
105. Head of Seaside Sparrow ...... 
106. Head of Lark Sparrow ....... 
107. Head of Chipping Sparrow ...... 
108. Head of Fox Sparrow ....... 
109. Head of Dickcissel ........ 
110. Barn, Cliff, Tree, and Bank Swallows .... 
111. Section of primary of Rough- winged Swallow 
112. Head of Red-eyed Vireo ....... 
113. Wing of Warbling Vireo 
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