BLACKBURNIAN WARBLER 163 



Blackburnian Warbler has been in the 

 Garden on the nineteenth day of May, 

 having arrived on that day. The latest 

 date to which a visitant has remained has 

 been May 24, in 1905 and again in 1908. 



This warbler is usually in the larger trees 

 — elms, willows, or maples — and in the 

 higher branches. A very favorite tree of 

 the species is a large, ill-shaped willow near 

 Arlington Street and almost opposite the 

 church. Here several of the visitants have 

 been seen, together with other warblers. 

 In 1907 the visitant frequented a large 

 silver maple near the southeast corner of the 

 pond, sometimes passing into other trees 

 beside this ; but during his foiir days* stay 

 he was seen in this tree each morning — 

 a marked instance of chosen limitation of 

 range while remaining. 



On May 20, 1900, in cool and clouded 

 conditions of weather a Blackburnian 

 Warbler was seen upon one of the grass- 

 plots, finding his food on the surface. On 

 the grass with him were also magnolia, 

 black-poll, chestnut-sided, black- throated 



