UNEXPLAINED EXCITEMENT. 135 



ual was on the alert, sprang to arms, as it 

 were. Blue jays joined in, robins hurried to the 

 tops of the tallest trees and added their excited 

 notes, with jerking wings and tail, and at the 

 second or third repetition the whole party pre- 

 cipitated itself as one bird upon what ? No- 

 thing that I could discover. 



