ViscHER — Notes on the Sandhill Crane. 115 



more fearless. On the days of heavy migration, when other birds are 

 also numerous, this warbler seems to start up from every bunch of 

 grass all along the five miles or more of open beach. The median 

 dates of spring migration are : for arrival, April 29, for departure, 

 May 17 (May 22, 1909). Fall arrival, September 16; departure, 

 October 5. It has always been in the most numbers late in Sep- 

 tember. I did not find it on any of the islands in 1905. 



216. Dendroica pahnarun liypochrysea. — Yellow^ Palm Warbler. 

 The only record for this eastern form of the Palm is that already 



reported in the Auk, IX, 1892, 397. The date was April 10, 1891, 

 near Oberlin. 



217. Dendroica discolor. — Prairie Warbler. 



My records are few. The only time I have seen it in any num- 

 bers was May 13, 1907, all along the Cedar Point sand spit, on that 

 greatest day of migration I have ever witnessed. Other records 

 are April 29, 1899, May 14, 1903, May 9, 1904, May 2, 1906; May 

 11 to 20, 1907, May 11, 15, 16, 1908; May 11, 14, 17, 1909. I have 

 never found it in fall. It has never been seen in the summer. 

 Where did all those which were on the sand spit in 1907 go, since 

 they did not put in an appearnce on Point Pelee? It hardly seems 

 possible that so large a host could return southward to breed after 

 the excitement of the migrations had died out. The typical hab- 

 itat of this bird in the migrations is a low brushy border of woods. 

 The small growth of bushes along the sandspit seems to form a 

 congenial feeding place. 



NOTES ON THE SANDHILL CRANE. 



r.Y STEPHEN SARGENT VISHER. 



The Sandhill crane (.^nts mexicana and g. canadensis) is 

 one of the most conspicuous birds of the prairie region. Every 

 farmer boy knows its call, and on fair days has seen large 

 flocks soaring at great heights, slowly passing northward. 

 Constantly their unsurpassed calls drift down to earth. When 

 only a slight wind is blowing, these rich, bugle-like notes can 

 be heard farther than the bird can be seen. Several times I 

 have examined, for some moments in vain, the horizon before 

 the authors sailed in view. On windy or rainy days, the 

 flocks fly low nad swiftly in a direct line, and each individual 

 croaks in turn. Thus slowly the music moves along the un- 

 dulating, curving line. 



