6o 



BIRD-LAND ECHOES. 



outgrown. Just here evolution has proved a trifle 

 weak in its workings. 



This is one of our summer resident warblers that 

 we may confidently expect to see, but there seems to 

 be a good deal of variance in the opinions of bird- 

 men as to its coming and going. It is stated to be 

 extremely sensitive to cold, and the opposite opinion 

 has also been expressed. This sensitiveness, if a 

 fact, does not actually drive the bird away. I have 



Black-and- White Tree-creeping Warbler. 



seen them here in advance of the red-polled warblers, 

 and they linger habitually until late in November. 

 Doubtless much more depends upon the food-supply 

 than upon the temperature, for I have seen one of 

 these birds that was evidently quite happy after an 

 April snow-storm that whitened the ground and gave 

 a decided wintry aspect to the woods, in spite of the 

 blossoms and bursting leaf-buds. 



A very different bird is the yellow-rumped warbler. 



