20 THE NESTING SEASON. 



May 15. King Rail. May 25. Maryland Yellow-throat. 



15. Virginia Kail. 26. Bob-white. 



15. Meadowlurk. 26. Marsh Hawk. 



15. Field Sparrow. 28. Grasshopper Sparrow. 



15. Swamp Sparrow. 28. Red-eyed Vireo. 



15. Hooded Warbler. 28. Yellow-throated Vireo. 



16. Blue-winged Warbler. 29. Black-billed Cuckoo. 



16. Brown Thrasher. 29. Kingbird. 



17. Fish Crow. 29. Bobolink. 



17. Redstart 29. Indigo Bunting. 



17. Catbird. 29. Chestnut-sided Warbler. 



17. Wood Thrush. SO. Yellow-billed Cuckoo. 



18. Red-winged Blackbird. 30. Orchard Oriole. 

 18. Black and White Warbler. 30. Seaside Sparrow. 



18. House Wren. 30. Sharp-tailed Sparrow. 



19. Tree Swallow. 30., Rough-winged Swallow, 

 19. Bank Swallow. 30. Clifl' Swallow. 



19. Chickadee. 30. Warbling Vireo. 



20. Rose-breasted Grosbeak. 30. Prairie Warbler. 



20. Worm-eating Warbler. 31. Long-billed Marsh Wren. 



20. Oven-bird. 31. Least Bittern. 



20. Veery. June 1. Bartramian Sandpiper. 



21. Sharp-shinned Hawk. 1. Piping Plover. 

 21. Downy Woodpecker. 1. Nighthawk. 



21. Least Flycatcher. 1. Kentucky Warbler. 



22. Parula Warbler. 3. Whip-poor-will. 



23. Hairy Woodpecker. 3. Great-crested Flycatcher. 



23. Chat. 3. Scarlet Tanager. 



24. Purple Finch. 5. Wood Pewee. 



24. Spotted Sandpiper. 7. Short-billed Marsh Wren. 



25. Chimney Swift 8. Laughing Gull. 

 25. Baltimore Oriole. 12. Common Tern. 

 25. Purple Martin. 19. Cedar Waxwing. 



25. White-eyed Vireo. 20. American Goldfinch. 



Hints on keeping Note-Books and Journals. The necessity of a 

 well-kept journal can not be too strongly urged. Specimens may be 

 duplicated, but no one can ever see with your eyes. Do not attempt 

 to trust to your memory a willing servant of the mind too frequently 

 imposed upon. It may receive and retain one impression clearly, but 

 as others are added the earlier ones lose their distinctness or become 

 entirely effaced. 



The system adopted for recording notes should be simple to keep 

 and easy of reference. The one here recommended has stood the test 

 of ten years' experience. After returning from the field I enter in my 

 "roll-book," at once, a record of the weather, temperature, direction 

 and force of the wind, locality visited, time of starting and returning, 



