Lexington, Mass.
1910
June 9
(No 3)
[June 9, 1910]

Helmin. leucobronchialis [Helminthophila leucobronchialis]

showed a few patches or tufts of light yellowish down which
Faxon tells me he saw no trace of yesterday
  Within two or three minutes after I had looked at the young
the [female] parent came with food in her bill. We were then standing
by the track of the pine about 15 feet from the nest. The bird
saw us an [and] began chirping very like a Maryland Yellow-throat.
A few moments later she began making a wholly different
noise, very harsh and vibrant something like the low grating
chatter of a Marsh Wren. Evidently she was now greatly disturbed
by something, apparently a Chipmunk who appeared on the bank
just above the nest. He kept steadily on & as soon as he was
out of sight the bird ceased chattering & began chirping again.
We saw her now to the best possible advantage as she hopped &
flitted about among some low shrubs close to the nest, repeatedly
alighting on the top strand of a wire fence in full sunlight
& showing her upper & under parts & her sides, by turns.