34 Bulletin No. 26. 



Comparing Delavan, Wis., with Oberlin, Ohio, as to the time of 

 arrival, since they are more nearly alike in physical features and latitude, 

 we find that while Killdeer, Robin and Bluebird arrive somewhat earlier 

 at Oberlin than at Delavan, on the average, the opposite is true of 

 Meadowlark. It is difficult to assign a reason for this difference unless it 

 be due to the fact that the species regularly winters at Oberlin while it 

 apparently does not winter at Delavan, Wis. The wintering individuals 

 are disregarded in determining the migratory movements of the species, 

 of course, and some confusion may result in exactly determining just 

 when the first migrants appear, while at Delavan, Wis., the first ones 

 seen will be migrants. But that part of the Mississippi Valley may 

 present conditions peculiarly favorable for early movements of this 

 species. The lower latitude and warmer winters of northern Ohio would 

 make earlier movements of most species of birds reasonable and ex- 

 pected, other conditions being equally favorable. The much higher 

 latitude of Pittsfield, Me., is the cause of the later appearance of all the 

 species there. 



So good an opportunity to determine which of these four hardy species 

 reaches the north first should not be missed. Consequently the follow- 

 ing table for each of the places mentioned has been prepared. 

 Grinnell, Iowa. 18S5 1886 1887 1888 1889 1890 



Killdeer March 21. March 16. March 8. March 17. March 11. March 18. 



Meadowlark.. .March 5. March 24. March 8. March 15. Feb. 26. March 17. 



Robin Wintered. March 14. March 8. Feb. 23. Feb. 27. Feb. 12. 



Bluebird March i. Feb. 23. Feb. 28. Feb. 21. March i. Feb. 12. 



Delavan, Wis. 1892 1894 1895 i8g6 1897 1898 



Killdeer Marcti 10. March 23. March 9. March 22. March 7. 



Meadowlark.. .April 30. March 5. March 24. March 17. Jan. 15. March 5. 



Robin March 7. March 6. March 18. March 8. March 11. March 8. 



Bluebird March 26. March 4. March 25. March Jo. March 11. March 7. 



Oberlin, Ohio. 1894 1895 1896 1897 1898 1899 



Killdeer March 5. March 23. Feb. 27. March 6. March 6. March 3. 



Meadowlaak. .March 10. March 23. March 17. March 15. March 11. March 8. 



Robin Feb. 28. Jan. 7. Feb. 26. Feb. 13. March 7. F^eb. 20. 



Bluebird Feb. 28. March 23. Feb. 29. Feb. 17. March 7. Feb. 20. 



Pittsfield, Me. 1890 1892 1893 1894 1895 1896 1897 1899 



Meadowlark. May S2. Apr. 18. Apr. 18. Apr. 24. 



Robin Apr. 4. Mar. 28. Mar. 31. Mar. 31. Apr. 7. Mar. 28. Mar. 30. Apr. 8. 



Bluebird Apr. 3. Mar. 30. Mar. 29. Mar. 13. None. Apr. 18. Apr. 7. Apr. 7. 



In studying these tables one must remember that the Bluebirds were 

 nearly exterminated during the winter of 1894-5, a fact which is clearly 

 bro't out by the records of arrival for 1895 and i8g6. These two years 



