The Migration of North American Birds 



34i 



FALL MIGRATION, continued 



LOCALITY 



Geneva, N. Y. . . . 

 Hartford; Conn. . . 

 Providence, R. I. . 

 Harvard, Mass. . . 



Boston, Mass 



Tilton, N. H 



Phillips, Maine . . . 

 Montreal, Quebec 



Athens, Tenn 



Lexington, Ky 



Concordia, Mo . . . 



Chicago, Ills 



Waterloo, Ind .... 



Oberlin, Ohio 



Wauseon, Ohio. . . 

 Vicksburg, Mich . 

 Detroit, Mich. . . . 

 London, Ontario. . 

 Ottawa, Ontario . . 

 Keokuk, Iowa. . . . 

 Madison, Wis. . . . 

 Lanesboro, Minn. 



Onaga, Kans 



Aweme, Manitoba 



Number 



of years' 



record 



16 



15 

 6 



4 

 7 

 7 



7 



3 



15 



11 



10 



6 



25 

 18 



Average date of 

 departure 



September 10 

 September 21 

 August 24 

 September 8 

 August 26 

 September 5 

 August 26 

 August 21 

 September 12 

 August 29 

 September 1 

 September 9 

 August 30 

 September 1 

 September 15 

 August 30 

 September 4 

 September 4 

 August 25 

 September 2 

 August 24 

 August 27 

 September 4 

 August 28 



Latest date of 

 departure 



September 

 September 

 September 

 September 

 September 

 September 

 August 31, 

 August 31, 

 September 

 September 

 September 

 October 7, 

 September 

 September 

 October 2, 

 September 

 September 

 September 

 September 

 September 

 September 

 September 

 September 

 September 



12, 1915 

 3°, 1905 

 13, 1897 

 25, 1909 

 14, 1911 

 29, 1908 

 1914 

 1912 

 29, 1909 



3, 1905 

 6, 1912 

 1906 

 2, 1906 



21, 1906 

 1897 



24, 1902 



22, 1912 

 8, 1900 

 16, 1885 

 10, 1901 



5, 1914 

 1, 1889 

 18, 1908 



6, 1913 



Notes on the Plumage of North American Birds 



SIXTY-FIFTH PAPER 

 By FRANK M. CHAPMAN 



(See Frontispiece) 



Baltimore Oriole {Icterus galbula). Both male and female nestling Orioles, 

 aptly called by Olive Thorne Miller the "cry-babies of the bird world," resemble 

 the immature female (Fig. 3). At the postjuvenal molt the body feathers are 

 exchanged for a new set, but the wing and tail feathers are retained. The 

 somewhat downy looking feathers of the nestling plumage are replaced by 

 stronger, firmer ones, but there is no essential difference in color between the 

 juvenal, or nestling, plumage and the one (first winter) which follows it. The 

 sexes still resemble each other, and Figure 3 of the frontispiece, therefore, 

 represents the male in its first winter dress, as well as the female at this age 

 and older. 



The spring (prenuptial) molt occurs before the bird leaves its winter quarters 

 in the tropics, and collections contain few specimens illustrating it. There is, 

 however, a young male in the American Museum collected about seventy years 

 ago near Panama, which is molting from first winter into first breeding plumage. 

 New black feathers are appearing in the throat, and two black, olive-tipped 

 feathers are half -grown in the center of the tail ; new black, white- tipped wing- 

 coverts are replacing the old brownish ones, and deeper orange feathers are 



