22 Proceedings of the Biological Society of Washington. 



stands at 293 species. Among the notable occurrences of rare 

 visitors may be mentioned the Prothonotary Warbler at Dyke, 

 Va., April 30-May 2, 1911; Pine Siskin, near Bennings, April 

 6, 1912; Bachman Sparrow, one all the summer of 1912 near 

 Lanham, Md.; Olive-sided Flycatcher, May 9, 1912; King 

 Rail, eggs May 30, 1910, near Long Bridge; Black Rail, near 

 Bennings Bridge, September 1, 1908; American Bittern, at 

 Dyke, April 8, 1911, and April 21, 1912; American Egret, at 

 Anacostia, first three weeks of August, 1912; Little Blue Heron, 

 several July 29 and September 24, 1911, near Anacostia. In 

 addition to the records of the Philadelphia Vireo already given, 

 it has been noted May 17, 1888; May 29, 1897; September 22, 

 L889; September 16, 1894; September 15, 1895; September 

 8, 10, 15, and 20, 1896, and September 14, L899. 



Spring .Migration in the District of Colombia. 



Species. 



Purple Grackle Feb. 



A verage 

 date of 

 spring 

 arrival. 



Earliest date 



of spring 



arrival . 



Average 

 date of 

 the last 



one seen. 



Woodcock 



Red-winged Blackbird • ■ 



Killdeer 



Hermit Thrush 



Phoebe 



Fox Sparrow 



Wilson Snipe 



Flicker 



White-throated Sparrow • 



Cowbird 



Savannah Sparrow . . . 



Pipit 



Mourning Dove ... 



Vesper Sparrow 



Kingfisher 



Chipping Sparrow . . . 



Chewink 



Myrtle Warbler 



Purple Martin 



March 2 



20 

 o 



2 

 G 

 9 

 10 

 12 

 15 

 16 

 is 

 20 

 21 

 21 

 21 

 21 

 25 

 26 

 26 

 30 

 31 



Rare, 



Feb. 



Rare, 



Feb. 



Rare, 



Jan. 



Rare. 



Mar. 



Rare, 



Rare, 



Rare, 



Rare, 



Feb. 



Rare, 



Rare. 



Rare, 



Mar. 



Rare, 



Rare, 



Mar. 



winter 

 14. 1S84 

 winter 

 14, 1908 

 winter 

 10, 1909 

 u inter 

 •J. 1894 

 winter 

 winter 

 winter 

 winter 

 li;. 1908 

 winter 

 winter 

 winter 



'.K 1902 

 winter 

 winter 



9, 1908 



Breeds 



breeds 



Breeds 

 Breeds 

 May :; 

 Breeds 

 April fi 

 Ma y 2 

 Breeds 

 May 19 

 Breeds 

 May I 



Breeds 



April •") 



Breeds 



Breeds 



Breeds 



May 12 



Breeds 



Latest dab 1 

 of the last 

 one seen. 



May 17, 1902 



May 11, 

 May II. 



ISS'J 



1907 



June II. 1899 



May 11 

 May II 



Rare, s 



1 885 



linn 



May 23, 1903 



