Cambridge, Mass.
1908
March 11
  At daybreak this morning a Screech Owl gave its love call
four times near the house where I am staying on Buckingham Street.
Love Song of Screech Owl
March 14
  The Screech Owl heard again this morning very near own house.
It gave the love calls dozens of times at very regularly spaced
intervals of about ten second each. The call lasted about three
seconds as nearly as I could tell by counting after the photographers
method ("one thousand and one" et). There were at least a dozen
notes and I think a few more in each call but it was
impossible to count them accurately. I could hear them
quite distinctly as I lay in bed with all the windows closed.
I should render them bub-bub-bub-bub-bub-bub-bub-bub
bub-bub-bub-bub given very rapidly and smoothly or
at least evenly. The general effect is not unlike that
of the Downy Woodpecker's drumming call. I thought, also,
of big bubbles in rapid succession. All this
happened not long before daybreak but before I noted
any increase in the light out of doors.
March 16
  A Screech Owl gave its love call once at 8 P.M. very
near me in the willows on the Dr. Wyman place, Sparks Street.
March 17 
  Heard the Screech Owl near our house on Buckingham Street
about 10 P.M. just after I had gone to bed. The love call
was repeated about a dozen times on this occasion. I have
heard no other sounds from this or other birds this spring.