41 2 



The Bird 



low, beneath the wing-tips, while active, nervous species 



carry it more or less raised. 



In certain of the flycatchers 

 the tail, which hangs demurely 

 downward, reacts with a jerk 

 to every note of the bird, as if 

 connected with the bird's vo- 

 cal apparatus, as in our com- 

 mon Least Flycatcher at every 

 ''Che-bec'!" 



The jerkins: motion of the 



Fig. 327.— Tail of Chimney Swift. ., , , 



tail seems to have become 

 a regular habit with many birds, and, curiously enough, 



P"iG. 328.— Tail of Flicker. 



especially with those which spend their lives chiefly along 



