258 
concealing, 108, 180; of bobolink 
west, 186; and wing shape and 
length, 172; a chapter on, 177; 
theory of, 178; estimating time of, 
191; routes of, 184; and Heligo- 
land, 182; and telescopes, 181; 
young birds starting first in, 183. 
Miller, Mrs. O. T., on bird spots, 246. | 
Mimiecry, 85; by molt, 38; by orna- 
ment, 47; of sandpiper, 56; of 
others, 65 (ill.) ; of haunt, 87. 
| 

THE STORY OF THE BIRDS. 
Nidifuge, 129. 
Nighthawk, protective plume of, 47 ; 
feeding of, 150. 
Nostrils, suppressed, 76, 193; at end 
of beak in Apteryx, 137 ; tubular 
in petrels, 215; in goatsuckers, 
217 ; flaps and ceres over, 222, 224 ; 
perforate in vultures, 224. 
Nudity not used much in birds, 22, 
Moas (fossil), double-stemmed feath- | 
ers of, 28. 
Mocking bird, song flight of ,73 ; win- 
ter in North, 244. 
Molt, 37-41; and color, 38; and re- 
pair, 38. 
Moral progress, 52 ; 
65 ; by monogamy, 87. 
Motmots, toes and kinship, 210; 
identifying by notched bill, 226. 
Muscles, changed, 10 et seg. ; lost, 
193 ; ambiens, 157, 193. 
Music (see Sona), 77 et seq. ; rivalry 
in, 65; a march, 78. 
Nature, looking ahead, 6; preserv- 
ing energy, 16; shortening pro- 
cesses, 40; care of race, 53 ; doing | 
her best, 146; compensations of, 
149, 172, 192. 
Nest (see Chapters XVII and XVIII), 
affecting color of female, 51; lo- 
cated region of, by male, 86; built | 
by which sex, 87, 88; of mega- 
podes, 99; and bird, origin of, 
102 ; not fossil, but origin hinted, 
105; concealing of, and ornamen- 
tation, 107 ; second, in the season, 
113 ; repairing of, 115 ; site of, and 
egg colors, 121; and migration, 179, 
180 ; and distribution, 179, 180; 
floating, 198; of glass and watch 
springs, 104. 
Nestling. See Youne. 
Newton, Alfred, on grebe’s crawling, 
198. 
Nidicole, 129. 
by conscience, | 
45. 
| Nuthatch, nest of, 101 ; opening hole, 
how, 150; feeding awing, 151, 284 ; 
notes on, 283, 234. 
Nuttall, note on oriole, 93, 95. 
Odor (see Chapter XII), strong in rep- 
tiles and mammals, 73; incidental 
to food, ete., 74, 75; in flocking 
birds, 75; voluntary suppression 
of, 76. 
| Oil gland, 74, 194. 


Odlogy, 121. 
Orioles, feeding, 151; nesting, 199; 
nest, changes in, 246 ; marrying in 
baby clothes (ill.), 247. 
Ornament, as charming, 44 ; exas- 
perating, 45; as signaling, 56; by 
shape and color of feather, 45; 
style of, changed, 46; not sacri- 
ficed for safety, 47 ; often flaunted, 
50. 
Ornamenting nest, 50; bowers and 
gardens, 50, 200. 
Opossum’s opposable toe, 164. 
Oscines, 78, 176, 194, 195, 229. 
| Osprey, repairing nest annually, 115 ; 
kinship of, 209. 
Ostrich, kin to reptiles, 15; air 
spaces in, 20; the group without 
bare tracts, 23 ; plumes of twisted, 
41 ; method of fighting, 63 ; male’s 
care of young and incubating, 87 ; 
sand hatching of, 99 ; feeding hab- 
its, 137 ; kinship of, generally, 202, 
203 ; identifying, 213. 
| Ousel (water), its downs, 27 ; feeding 
habits, 153 ; young not diving, 197 ; 
domed nest of, and kinship, 199. 
