INDEX. 
Ovenbird, nest domed, 199 ; mincing 
steps of, 246. ‘ 
Oviduct, egg colors in, 118; egg, 
size in, 126. 
Owls (ill.), 17, 225;.grotesque play 
of, and pairing, 84; repairing old 
hawk’s nest, 115; globular eggs 
of, 121; feeding habits of, 142; 
kinship of, 147, 208, 209; identify- 
ing, 224; screech, a winter pet, 
244, 245. 
Pairing (see MATES and MARRIAGES), 
time of, 84-86. 
Palmate, foot, 163. 
Papille, clustered, 28 ; rising up, 82. 
Parrots, feeding and beak, 147 ; 
sleeping habits, 158 ; kinship, 209 ; 
identifying, 225. 
Partridges (see QUAIL), mimicry of, 
47. 
Passeres, origin of, 128; feeding, 151 
et seq. ; destitute of ambiens, 157 ; 
grasping automatic in sleep, 157 ; 
squatting on roost, 158; typical 
foot of (ill.), 161 ; toe tendons, 169 ; 
kinship of, 210; order of families, 
211; identifying, 229. 
Patagium and muscle, 7. 
Pattern, 35; and molt, 39; ruling 
all, 43; protecting, 47. 
Peacocks, ornamented by feather 
degeneration, 26, 47. 
Pelican (forms), feeding, 140; rear 
toe webbed forward, 145; kinship, 
207 ; identifying, 216. 
Penguins, with no bare tracts, 23; 
inclosed thumb, 11; fossil, with 
bare tracts, 24; shed epidermis in 
flakes, 38, 43; flight under water 
and feet as rudders, 139, 171; leg |. 
bones separate, 167 ; never strictly 
terrestrial, 169; alternate wing 
stroke, 170; pocket for egg, 171; 
kinship, 207 ; identifying, 214. 
Perchers. See Passeres. 
Perspective in ornament, 48. 
Petrels, ejecting food in defense, 64, 

259 
146; to feed young, 131; adult 
feeding of, 140; kinship of, 207, 
208 ; identifying, 215. 
Pewee, feeding, 151; eggs of, 119. 
See FLYCATCHER. 
Pheasant, Argus, shaded spots on, 
loss of color in, 48; its display, 49 ; 
more than one leg spur in some, 63. 
Phoebe. See PEWEER. 
Picarice, feather tracts of, 22; hole 
builders largely, 198; regurgita- 
tors, 182; feeding habits of, 150; 
toe peculiarities, 22, 150 ; roost in 
holes largely, 157; kinship of, 
209. 
Pigeons with wing spurs, 62 ; egg 
shape, 122; regurgitating food 
131 ; not scratching, 137; kinship, 
204; nostril flaps, 222; grading 
into fowls, 224. 
Pigment, infusion of, during growth, 
39 ; range of, 46; eggs of, 120. 
Play, 69, 70. 
Plantain eaters, 147, 209. 
Plovers (and plover forms), color 
calls on, 55 (ill.); weapons of, 59; 
wing spurs of, 62, 63; grotesque 
play of, 70; males incubating, 87, 
88; pointed eggs of, 122; wing 
shape of (ill.), 172 ; chest muscles 
of, 173; migration of, 180; egg 
number, 122; kinship of group, 
202-204, 205 ; identifying, 221. 
Plumage, and migration, 19; and 
bare tracts, 23; once in patches, 
24; solid in flightless birds, 24; 
down seems the germs of, 25; 
where degenerate, 26; tells much 
of history, 34; and color, 35 ; slow 
acquisition of complete, 40; ar- 
rangement of, in sleep, 155, 159. 
Plume, 37, 38. 
Polygamy, and song, 87; and weap- 
ons, 62, 64; and fatherly devotion, 
88 ; and brilliancy, 95. 
Powder downs, 26, 27. 
Precocials, with down, 29; molt of 
wing quills, 38; heat affecting 
