WILSON'S WARBLER 



275 



average four years September 19, latest September 29, 1890; Pictou, 

 N. S., August 24, 1894; St. John, N. B., September 17, 1896; Renovo, 

 Pa., average six years, September 21, latest September 30, 1895; 

 Germantown, Pa., October 15, 1889. 



Spring Migration. The locality will be sufficient to indicate 

 which form of this species the following notes refer to : 



The Bird and its Haunts. As a migrant I find Wilson's Warbler 

 usually in bushes bordering woodland waters. At the northern base 

 of Monadnock, Gerald Thayer (M.S.) writes: "This jaunty little War- 

 bler-flycatcher is often common in the spring migration, from the 

 9th to the end of May. It haunts damp alder-copses, orchards, and 

 small deciduous second growth along roadsides, and seems to avoid 

 the upper parts of the mountain and of the surrounding hills. 



