England.
1911.
July 1-31
(No 7)

Carrion Crows
Redstart
Young Sand Martins in brick drain in wall.

  During a visit which we made to Cambridge on July 10th
I saw or heard, late in the afternoon, in the beautiful park-like
grounds bordering the Cam on both sides, at the rear of the long line
of colleges, great numbers of birds. Among them were three young
& very noisy Carrion Crows, perched in the dead top of a large oak, and 
a female Redstart, a species new to me in life, which flitted along a
ground walk ahead of us, sometimes alighting in the path & hopping over
it much like a Robin, frequently clinging to the trunks of the trees
where its reddish tail & dark grayish forehead showed conspicuously.
At the mouth of a brick drain about a foot square in the face of an
old brick wall about three feet above the surface of the Cam, at the
rear of Kings Chapel, were four young Sand Martins huddling close
together and fed every half minute or so by one or both parents. Although
almost & perhaps fully grown & fledged I doubt if they had as yet taken
to wing and suspect that they had been hatched within the
drain which was not discharging any liquid matter at the time.