362 



INDEX. 



Nuthatches, 294 



Odonata, 207 

 Optic nerve, 8 

 Orders of birds, 305. 



of insects, 57 

 Orientation, 279 

 Orioles, 137, 257, 293 

 Orthoptera, 43, 87 



characteristics, 85 



bird enemies, 97 



metamorphosis, 87 



mouth-parts, 87 

 Oscines, 308 

 Ostrich, 266, 282 

 Owls, 258 



barn, 292 



screech, 99, 137, 292 



Palpi, 5 



Parasitism, 149, 150 

 Paroquet, Carolina, 316 

 Parrots, 316 

 Passenger pigeon, 321 

 Passeres, 307, 355 



biological position, 308, 311 



characteristics, 307 



economic value, 311 

 Pelicans, 301, 343 

 Pen-marked sphinx, 133 

 Phalangina, 235 

 Pheasant, Mongolian, 74, 293 

 Phoebe, 74 

 Physopoda, 44 

 Picarias, 312 

 Pici, 313 



Pigeon horntail, 1 50 

 Pigeons, 320 

 Pillbug, 238 

 Pink eye, 192 

 Plecoptera, 217 



adult characteristics, 217 



development, 217 



feeding habits, 218 



nymphal characteristics, 217 

 Plovers, 327 

 Plumage of birds, 271 

 Pollen gathering by bees, 163 

 Polygamy among birds, 280, 342 

 Pomace flies, 193 

 Potato beetle, 73, 78 



bird enemies, 74 

 Praecocial birds, 281 



Prairie chickens, 74, 97, n8, 322 



Prairie squirrels, 2 59 



Praying mantids, 14, 82, 94 



Primaries, 270 



Primitive ground sense, 10 



Propolis, 164 



Protective colors: 



birds, 272, 327 



insects, 12, 79 

 Protozoa, i 

 Psittaci, 316 

 Puffins, 350 



Pupa, 33, 36 

 Pygopodes, 3 



Quail 



experiment, 



and chicken 



3 2 5 



uails (see Bobwhites) 

 ueen cells of honey bees, i 59 



Rails, 334 

 Raptores, 318 

 Reading glass, 50 

 Recognition colors: 



insects, 7 

 Rectrices, 268 

 Red-tailed hawk, 258, 292 

 Regal moth, 134 

 Respiration : 



birds, 300 



insects, 20 



rate of, 23, 308 

 River fluke, 290 

 Roaches, 92 



development, 94 



food habits, 94 



foreign and native, 93 

 Robber flies, 203 

 Robins, 74, 97, 137, 256, 267 

 Rose-breasted grosbeak, 74, 290 

 Rose chafers, 73 

 Rove beetles, 62, 69 



Sandpipers, 327 



spotted, 329 

 Sawflies, 149, 154 

 Scale insects, 103, no 



bird enemies, 118 

 Scales, 125 

 Sclerites, 3, 6 

 Screech owl, 97, 137, 292 

 Scorpions, 236 



