Petrochelidon lunifrons.
Lakeside, N.H.
1907,
July 26.
Char
Chur
G'hur
Chur-r-r\E-ar, e-ar, e-ar. A rather plaintive note, not often 
heard, given just as some birds took wing - evidently a cry of
alarm, I thought; sometimes used singly, sometimes repeated two or 
three times in quick succession.
  The cork-in-the-bottle notes must represent the Eave 
Swallow's attempts at song. I do not them now that the young are
on wing with their parents. The young are fed in the air mounting
straight up with the parent, bill to bill.