Oxford.
1909.
Sept. 19 [September 19, 1909]
(No 2)
  Four or five Marsh Tits flitting about among shrubbery & trees
near a path were rather tame & I had a good view of them.
They look very like our Chickadees & their behavior was much
the same while they occasionally gave a Chickadee-dee-dee call
but most of the their notes sounded unfamiliar. At least two
of them sang freely for minutes at a time. The song (which
I heard first at Wells in 1891) was loud, penetrating & rather
pleasing but somewhat too shrill & wiry to be wholly so.
It consists of either two or three notes, pitcher, pitcher
or pit-cher, pit-cher, pitcher, all very closely enunciated &
each strongly accented on the first syllable. Sometimes there
is a short note (pit) added at the end of the song. I 
heard other Tits of this species singing in other places.
I saw two Blue Tits, one alone by itself, the others with
the little flock of Marsh Tits. Both were silent and rather shy.
Morning walk in the Park.
  A Turtle Dove was cooing in the park and I heard
another in our garden early this morning. The coo of the
Turtle Dove consists of nine or ten notes uttered rather slowly,
with much seeming effort, in a deep, hoarse, gutteral voice.
It is interesting but not musical or even pleasing. When I was
here early in August I heard one of these Doves cooing among some
houses and finally saw it perched on the roof of a dove cot [dovecote]
in a back yard! Wood Pigeons, also, frequent the Oxford Park
but not in any numbers.
  The Rook caws much like our Crow but in a flatter,
less resonant voice. I heard one this morning uttering a loud
cleur, cleur which sounded very like the call of a Herring Gull.
  Jackdaws are very common in & about Oxford. They
spend much of their time on the roofs of houses & other buildings
perched on the chimney tops & hopping along the eaves. Their flight
call, a mellow heu, heu, sounds at a distance like that of our
Purple Martin.