The Migration of North American Birds 



341 



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 



Average date of 



Latest date of 



record 



departure 



departure 



2 



September 10 



September 12, 191 5 



16 



September 21 



September 30, 1905 



IS 



August 24 



September 13, 1897 



6 



September 8 



September 25, 1909 



4 



August 26 



September 14, 191 1 



7 



September 5 



September 29, 1908 



7 



August 26 



August 31, 1914 



II 



August 21 



August 31, 1912 



7 



September 12 



September 29, 1909 



3 



August 29 



September 3, 1905 



8 



September i 



September 6, 191 2 



9 



September 9 



October 7, 1906 



7 



August 30 



September 2, 1906 



6 



September i 



September 21, 1906 



II 



September 15 



October 2, 1897 



10 



August 30 



September 24, 1902 



7 



September 4 



September 22, 191 2 



3 



September 4 



September 8, 1900 



IS 



August 25 



September 16, 1885 



II 



September 2 



September 10, 1901 



10 



August 24 



September 5, 19 14 



6 



August 27 



September i, 1889 



25 



September 4 



September 18, 1908 



18 



August 28 



September 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 



