130 



INDEX 



Hummingbirds, 25, 103. 

 Hyoid bones, 100-103. 



Jay, blue, hoarding habit, 53, 60. 

 Kinglets, 5. 



Lightning rods attracting woodpeckers, 



18. 

 Logcock. See Woodpecker, pileated. 



Maple, rock and red, sugar made from, 

 36. 



Maize, eaten by English sparrows, 62, 

 65. 



Mandibles of woodpeckers, 13, 101. 



Martin, sand, 20. 



Mice, hoarding habit, 60. 



Migration, dependent upon food supply, 

 63. 



Mountain-ash trees, sought by wood- 

 peckers, 38. 



Nesting of woodpeckers, 20-23. 



Nests, hi unusual places, 20. 



North America, ornithologically defined, 



114. 

 Nuthatches, 5, 21, 30, 81. 



Oaks, used by Californian woodpecker 



for storing nuts, 48, 49. 

 Oranges, eaten by woodpeckers, 65, 66. 

 Owls, 15, 21, 80. 



Pangolin, as an ant-eater, 104. 

 Parrot, 13, 82. 

 Parroquet, Carolina, 5. 

 Pigeon, domestic, 27. 

 Pines, acorns stored in, 49. 

 " Ploughshare," anchylosed vertebrae of 

 tail, 86. 



Ravens, 74. 



Reason in woodpeckers' hoarding, 62. 

 Red-head. See Woodpecker, red-headed. 

 Robins, 39. 



Sap, not used as an insect-lure, 41. 

 how its loss harms the tree, 44, 45. 



Sapsucker, orange, 65. See, also, Wood- 

 pecker, red-bellied. 



red-breasted, 122. 



red-naped, 121. 



Williamson's, 122. 



yellow-bellied, 7, 15-17, 33-45, 59. 



102, 103, 105, 106. 

 Skull of woodpecker figured, 101. 

 Sparrow, English or house, 21, 62, 65. 

 Spears, 12, 13. 



Spruce, acorns stored in, 47, 49, 53. 

 Squirrels, thievishness of, 23, 53. 

 Subspecies defined, 114. 

 Swallow, eaves or cliff, 61, 64, 65. 

 Swallow, tree, 21. 

 Swift, chimney, 5, 20, 61, 87, 88. 



Tail, shape, 89. 



number of rectrices, 95. 



experimental demonstration of shape 

 a priori, 91. 



reason for shape, 98. 

 Tail-feathers studied, 94-97. 

 Taste hi the woodpeckers, 38, 39. 

 Telegraph poles resorted to by wood- 

 peckers, 7, 18, 48. 

 Thumb, of birds, 80. 

 Tin roofs resorted to by woodpeckers, 



17,55. 



Titmouse, crested, 21. 

 Toes, numbering of, 79, 80. 

 Tongue, appearance of, 99. 



figured, 99. 



bones of, 13, 100-103. 

 Trogons, yoke-toed, 82. 



Vanessa butterfly, 16. 



Vegetable food of woodpeckers, 3, 31. 



Vireos, 30. 



Warblers, 30. 



Weevils, not the object hi storing nuta 



52. 

 Woodpecker, Alaskan three-toed, 121. 



alpine three-toed, 121. 



American three-toed, 121. 



ant-eating, 123. 



arctic three-toed, 120. 



Arizona, 120. 



Batchelder's, 118. 



