1 Yellow-billed Cuckoo, p. 25
2 Black-billed Cuckoo, p. 25
3 Ruby-throated Hummingbird, female, p. 36
4 Ruby-throated Hummingbird, male, p. 36
5 Crested Flycatcher, p. 38
6 Kingbird, p. 37
7 Gray Kingbird, p. 37 (Southern States)
8 Baltimore Oriole, male, p. 52
9 Baltimore Oriole, female, p. 52
10 Orchard Oriole, adult male, p. 51
11 Orchard Oriole, female, p. 51
12 Orchard Oriole, young male, p. 51
13 Bobolink, female, p. 48
14 Bobolink, male, p. 48
15 Lincoln's Sparrow, p. 75
16 Grasshopper Sparrow, p. 64
17 Henslow's Sparrow, p. 65
18 Leconte's Sparrow, p. 65 (Mississippi Valley)
19 Lark Sparrow, p. 68 (Mississippi Valley)
20 Dickcissel, p. 80 (Mississippi Valley)
21 Harris's Sparrow, p. 69 (Mississippi Valley)
22 White-crowned Sparrow, p. 69
23 Indigo Bunting, male, p. 79
24 Indigo Bunting, female, p. 79
25 Rose-breasted Grosbeak, female, p. 78
26 Rose-breasted Grosbeak, male, p. 78
27 Scarlet Tanager, male, p. 80
28 Scarlet Tanager, p. 80
29 Warbling Vireo, p. 89
30 Philadelphia Vireo, p. 89
31 Worm-eating Warbler, p. 93
32 Orange-crowned Warbler, p. 96
33 Nashville Warbler, p. 96
34 Golden-winged Warbler, male, p. 95
35 Blue-winged Warbler, p. 94
36 Golden-winged Warbler, female, p. 95
37 Lawrence's Warbler, p. 95
38 Brewster's Warbler, p. 95
39 Parula Warbler, p. 97
[Illustration: CASE NO. 8. FIGS. 40-82]