520 INDEX 
Dafila acuta, 197. Duck, Dipper. See Bufflehead. 
Daption capense, 174. Dusky. See Duck, Black. 
Darter, Little Blue. See Hawk, Sharp- English. See Mallard. 
shinned. Florida, 193. 
Big Blue. See Hawk, Cooper’s. Gray. See Gadwall. 
Darters, 181. Greater Seaup, 202. 
December, birds of, id Harlequin, 206. 
Decoration of nest, Labrador, 206. 
Delaware Valley Ornithological Club, 23. Lesser Scaup, 202. 
Dendrocygna bicolor, 215. Long-tailed. See Old-squaw. 
Dendroica xstiva xstiva, 448. Masked, a 
auduboni auduboni, 451. Pied. See Duck, Labrador. 
cerulescens cerulescens, 449, Raft. See Scaup, Lesser. 
crulescens cairnsi, 450. Red-legged Black, 192. 
castanea, 453. Ring-bill. See Duck, Ring-necked. 
cerulea, ‘452. Ring-necked, 203. 
coronata, 450. Ruddy, 2. 
discolor, 460. Rufous-crested, 198, 
dominica albilora, 456. Scaup, 202. 
dominica dominica, 456. Spoonbill. See Shoveller. 
fusca, 455. Spirit. See Bufflehead. 
kirtlandi, 457. Summer. See Duck, Wood. 
magnolia, 451. Surf. See Scoter, Surf. 
palmarum hypochrysea, 459. Wood, 186, 197. 
palmarum palmarum, 459. Ducks, Molt of, 86. 
pensylvanica, 453. Dumetella carolinensis, 473, 
striata, 454. Dunilin, 253. 
tigrina, 448. 
townsendi, 457. Eagle, Bald, 302. 
vigorsi vigorsi, 458. Caracara. See Caracara. 
virens, 457. Golden, 301. 
Dermestes, 21. Gray Sea, 302. 
Dichromanassa rufescens, 225. Economic Value of Birds, 98. 
Dichromatism, 96. Ectopistes migratorius, 282. 
Diedapper. See Sree Pied-billed. Eggs, collecting and preserving, 21, 
Diomede ea exulans, 173. colors of, 78. 
Diomedeidez, 172; eed: 119. number of, laid, 77. 
Distribution and food, 98. shape of, 78. 
factors influencing, 27. size of, 78. 
factors governing local, 104. bere rs of, 78, 79. 
Diver, Great Northern. See Loon. Hegre, 2 24, 
Hell. See Grebe, Horned. eale’s, See Egret, Reddish. 
Diving Birds, 138. Reddish, 225. 
Dolichonyx oryzivorus, 358. Snowy, 225, 
Dough-bird. See Curlew, Eskimo. White, 110. 
Dove, Bermuda Ground, 285. Egretta candidissima candidissima, 225. 
Carolina. See Dove, Mourning. Eider, American, 207. 
Ground, 284. ing, 208. 
Mourning, 100, 283. Northern, 207. 
. Turtle. See Dove, Mourning. Steller’s, 207. 
White-winged, 284. Elanus leucurus, 291. 
Zenaida, 284. Empidonax flaviventris, 344. 
Dovekie, 149. trailli alnorum, 
Dowitcher, 247. trailli trailli, 346. 
Long-billed, 247. virescens, 345. 
Dryobates borealis, 325. Enemies of nesting birds, 7 
pubescens medianus, 325. Environment as mold for habit, 73 
pubescens pubescens, 325. Ereunetes mauri, 254 
villosus auduboni, 324. pusillus, 253. 
villosus leucomelas, 324, Erismatura jamaicensis, 210. 
villosus terrenovee, 324. Erolia ferruginea, 253. 
villosus villosus, 323. Erythrism, 96. 
Duck, Black, 192. Euphagus carolinus, 365. 
Black-head. See Duck, Scaup. 
Blue-bill. See Duck, Scaup. Falco esalon, 306. 
Bridal. See Duck, Wood. columbarius columbarius, 305. 
Broad-bill. See Ducks, Scaup and islandus, 303. 
Shoveller. mexicanus, 304. 
Brown-legged Black, 192. peregrinus anatum, 305. 
Butter. See Bufflehead. peregrinus peregrinus, 305, 
Crow. See Crgt. Tusticolus gyrfalco, 304, 
