Auks, ~1~, 110. Barn Owl Family, ~2~, 185, 204. Beak, ~1~, 95-97. Blackbird, Brewer's, ~2~, 113. Blackbird, Crow, ~1~, 72; ~2~, 110. Blackbird, Red-winged, ~2~, 94; portrait, ~2~, 94. Blackbird Family, ~2~, 94, 201. Blackbirds, ~1~, 3, 126, 129. Bluebird, arrival, ~1~, 3; getting food for young, 17; teaching young to fly, 37, 38; feeding, 50; ~2~, 5; portrait, ~1~, 38. Bobolink, nest of, ~1~, 9; one of the first birds to stop singing in summer, 47; the fall migration, 61, 62. Bob-white (quail), ~1~, 44, 59. Body, shape of, ~1~, 91. Bolles, Frank, his pet owl, ~1~, 101, 116; his story of a heron, 103, 104. Bones, ~1~, 92, 94. Books about birds, ~1~, 142-144. Brooding, ~1~, 13-16. Bubonidæ, ~2~, 178, 204. Bunting, Towhee, _or_ Chewink, ~1~, 76, 77; ~2~, 84; portrait, ~1~, 76. Bush-Tits, ~2~, 198. Butcher-birds, ~2~, 59. Buzzard, Turkey, ~1~, 50, 51; ~2~, 194. Canary, ~1~, 20, 57, 81. Caprimulgidæ, ~2~, 155, 203. Cardinal, ~1~, 69, 132; ~2~, 88; portrait, ~2~, 90. Catbird, food of, ~1~, 49, 126; jerking the tail, 113; ~2~, 37, 125; portrait, ~2~, 36. Cathartidæ, ~2~, 194, 204. Cave-dwelling Family, ~2~, 30, 199. Cedar-bird, feeding young, ~1~, 19; story of affection for young, 78; usefulness to man, 126, 129; ~2~, 63; portrait, ~1~, 126. Certhiidæ, ~2~, 27, 198. Chat, Long-tailed, ~2~, 53. Chat, Yellow-breasted, ~2~, 52; portrait, ~2~, 52. Chewink, ~1~, 76, 77; ~2~, 84; portrait, ~1~, 76. Chickadee, defending eggs, ~1~, 11, 12; getting food for young, 18; as an eater of insects' eggs, 68, 126; affection for young, 78; ~2~, 22; portrait, ~2~, 22. Chickadee, Mountain, ~2~, 22. Chickadees, ~2~, 22. Chuck-will's-widow, ~2~, 157. Cinclidæ, ~2~, 42, 199. Color in feathers, ~1~, 120. _See also_ Plumage. Cormorant, ~1~, 94. Corvidæ, ~2~, 117, 202. Cowbird, ~2~, 51, 98. Creeper, Brown, ~2~, 27; portrait, ~2~, 28. Creeper Family, ~2~, 27, 198. Creepers, ~2~, 19. Crop, ~1~, 93. Crossbill, American _or_ Red, ~2~, 91. Crossbill, White-winged, ~2~, 92. Crossbills, ~1~, 97; ~2~, 91. Crow, American, punishing a young one, ~1~, 37; sleeping in flocks, 59, 60; story of an affectionate, 80; usefulness to men, 126; ~2~, 40, 117. Crow Family, ~2~, 117, 202. Cuckoo, Black-billed, ~2~, 174. Cuckoo, California, ~2~, 174. Cuckoo, Yellow-billed, ~2~, 174; portrait, ~2~, 174. Cuckoo Family, ~2~, 174, 203. Cuculidæ, ~2~, 174, 203. Dipper, American, ~2~, 42; portrait, ~2~, 42. Dipper Family, ~2~, 42, 199. Down, the first plumage, ~1~, 15, 21, 22, 115. Ducks, ~1~, 97, 115. Eagle, Bald, ~2~, 189, 192. Ears, ~1~, 102-104. Eggs, beauty of, ~1~, 11; the mother's care, 11, 12; incubation and hatching of, 13-15. Eyes, ~1~, 100-102. Falconidæ, ~2~, 188, 204.