Cambridge, Mass.
1913.
Feb. 7
[February 7, 1913]

  Clear and cold (8 [degrees] min.) with brisk northerly wind.

Parus hudsonicus.

  The Hudsonian Tit came to the suet by my
window at least half-a-dozen times when I was at my desk.
On a loose piece of paper, kept within easy reach for the purpose,
I noted the call notes he uttered on each occasion as follows: -

(9.20 A.M.) Pse-teedle, pse-teedle, pse-teedle; psee-teedle,
pse-teedle, pse-teedle. These notes were all clearly enunciated
rather loud and bright if not also merry in quality.

(9.25 A.M.) Tweedle - tweedle - tweedle - tweedle. These notes were
all on the same key, without emphasis on either syllable and flat
and monotonous. They suggested those of one of songs of the
Carolina Wren but were more listless and less loud. The bird
repeated them five or six times while flitting through the
rhododendrons near my window.

(9.40 A.M.) Spee-ey, spick-a-dee, spee-ey

(11.20 A.M.) Tse-see. Bird called only once. Spent 30 seconds at suet.

(11.50 A.M.) Tse-tse-tse very like call of Reg. satrapa [Regulus satrapa] given only
once. Bird remained at suet 35 seconds.

1.45 P.M. Pse-psee Equal emphasis on both syllables. Bird
spent 15 second on the suet.