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Bird - Lore 



occur also in woodlands that are typically Transitional, if the proper conditions 

 are found. The nest is usually placed at the base of a bush or an alder growing 

 from the side of one of these hillocks, usually in or near a clump of sphagnum. 

 The (Northern) Water-Thrush and the Mourning Warbler seem to be 

 influenced more by extreme humidity than by temperature. The damp, low- 

 land woods, where skunk cabbage and nettles thrive, attract the Mourning 

 Warbler and if, added to these, there are numerous pools of standing water 



SUBSTITUTES IN BIRD-LAND 



In this nest of the Parula Warbler, leaf skeletons have been substituted for Usnea moss, 



and used quite as skilfully 



the Water-Thrush is satisfied to go no farther north. Fallen logs, moss, and 

 royal ferns make it still more attractive for the Water-Thrush. Both the 

 nest of the Mourning Warbler, built up from the ground in a skunk cabbage or 

 a nettle, and that of the Water-Thrush, sunk in the moss at the foot of an 

 alder, are difficult to find. 



The Canadian Warbler is another species that seems to enjoy humidity, 

 for although it nests on the relatively dry hilltops, it is more abundant 



