Nature's First Law 



Hy to sail by, when off he dashes, clicks his bill over 

 his victim, and returns to the same lookout to watch 

 for another. 



As he flew off, you may have noticed the white 

 band across the end of his tail. In common with 

 many other birds that must migrate thousands of 



Young Richardson's grouse learning to perch above the reach 

 of prowling enemies 



miles every year, he shows the white feather, yet 

 not to his enemies — for his pugnacity often amounts 

 to. tyranny — but to his friends that travel with him 

 in flocks. Were it not for such showy white signals 

 as the vesper sparrow likewise wears in his tail, the 

 flicker on his lower back, and various other birds 

 display on tail, back and wings, many a migrant 



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