THE MIGRATION OF NORTH AMERICAN BIRDS 71 
Migration —Continued. Pinicola, 55. 
segregation during, 25. Pintail, 18, 47. 
short, 27. Pipit, 55. 
species and groups, 8. Piranga erythromelas, 26. 
ludoviciana, 49. 
Plectrophenax nivalis, 27. 
speed, 13. 
theories of causes, 5. 
undetermined, 27. | Pliny; 3: 
vagrant, 55. Plover, 12. 
variable, 28. American golden, 15. 
vertical, 55. eastern golden, 50. 
weather, 59. golden, 39, 40, 50, 51, 59. 
Mimus polyglottos, 63. Pacific golden, 49, 54. 
Mississippi Valley route, 45. 
Mniotilta varia, 9. 
upland, 11. 
Pluvialis dominica, 15. 
Mockingbird, 63. dominica dominica, 49. 
Movements of residents, 62. dominica fulva, 49. 
Murre, 24. | Pooecetes gramineus, 30. 
Myiochanes richardsoni, 55. Porzana carolina, 59. 
Mystery of migration, 3. Problems, migration, 61. 
Progne subis, 8. 
Nannus hiemalis, 27. 
Nighthawk, 6, 12, 26, 30, 44, 45. Quail, 2. 
eastern, 52. California, 62. 
Nocturnal migration, 11. | migratory, 2. 
Nucifraga columbiana, 55. western, 27. 
Nutcracker, 55. Querquedula discors, 42. 
Nuthatch, 5. Quiscalus quiscula, 26. 
white-breasted, 63. 
Nyctea nyctea, 8. 
é gals | Rail, 3, 11, 12. 
Nycticorax nycticorax hoacth, 55. 
Carolina, 59. 
Nyroca, affinis, 42. Raven, 15. 
americana, 42. Redhead, 42, 47, 65. 
marila, 42. 
Peay aT Redpoll, 8. 
valisinerla, 42. Redstart, 11, 38, 52. 
ae — Residents, movements of, 62. 
idemia, 48. Rhodostethia rosea, 52. 
Oncorhynchus, 24. 
Oporornis formosus, 46. 
Orientation, 23. 
Richmondena, eardinalis, 27. 
Riparia riparia, 44. 
| Rissa brevirostris, 52. 
eee é | Robin, 6, 18, 19, 20, 26, 28, 45, 52, 57. 
Otus asio, 63. pe en 52) 
Ovenbird, 52, 60. Atlantie coast, 42. 
Owl, sree te 27. Atlantic oceanic, 39. 
pee art evolution of, 52. 
SOOW Ia 20" Great Lakes, 45. 
Pacific coast route, 47 Mackenzie Valley, 45: 
Pacific oceanic route, 49. | Seer, Valley, 45. 
Passerculus princeps, 34. | See aoe, 
Passerella iliaca fuliginosa, 28. Pacifi Sigh 49 
iliaca iliaca, 28. aoe 2 ene . 
Pelican, 3, 12, 22. ; succes x 
Penthestes atricapillus, 5. Rowan, William, 7. 
carolinensis, 63. 
Perils, aerial obstructions, 57. | Salmon, 24. 
exhaustion, 59 Salpinctes obsoletus, 29. 
tion, 59. 
Sanderling, 23. 
Se oe | Sandpiper, 12, 23. 
Petrochelidon albifrons, 13. Se atan, 11. 
Pewee, western wood, 55. oo PEED ea 
Phalarope, 27. | Sapsucker, Williamson’s, 55. 
Seaup, 42. 
Scoter, 48, 49. 
northern, 23. 
Philacte canagica, 52. 
Philohela minor, 30. | white-winged, 43, 49 
Photoperiodism theory, 6. | Segregation, 25. 
Pigeon, homing, 25. Seiurus noveboracensis, 52. 
racing, 24. Setophaga ruticilla, 11, 38. 
