Concord (Farm & Ball's Hill)
Ther [Thermometer] Sept. 9, 1914 [September 9, 1914] Wea [Weather]
39 [degrees] Heavy rush of mig. [migratory] Warblers Fine
Mourning W. [Warbler], Bay-breasts [Bay-breasted Warbler], Blackburnians [Blackburnian Warbler], Canada [Canada Warbler] etc.
  Clear & cool with high N.W. [northwest] wind.
Mt. Washington reported covered with snow &
ice. These conditions to northward no doubt
occasioned the exceptionally heavy flight of
migratory Warblers noted here to-day. At
least 50 in woods along run at foot of lane,
half as many more in Birch Field, others
in orchard, Many on Pine Hill, a few
at Ball's Hill. Identified about 5 ad. [adult] & 1 juv. [juvenile]
Yellow-rumps [Yellow-rumped Warbler], 5 Bay-breasts [Bay-breasted Warbler], 2 Blackpolls [Blackpoll Warbler],
5 or 6 Blackburnians [Blackburnian Warbler], 6 or 7 Magnolias [Magnolia Warbler] (1 ad [adult male]),
6 or 7 D. virens [Dendroica virens], 3 Chestnut-sided [Chestnut-sided Warbler] (all juv [juvenile])
9 or 10 Redstarts, 1 Mourning [Mourning Warbler] ([female] juv [juvenile]), 1
Canadian [Canada Warbler] ([male] juv [juvenile]). 5 or 6 Usnea Warblers.
As were [we] were at noon dinner a pair of
Blackburnians [Blackburnian Warbler] & two Chestnut sides [Chestnut-sided Warbler] appeared
in the locusts just outside our windows.
Saw ad [adult male] Bay-breast [Bay-breasted Warbler] & ad [adult female] Blackburnian
together in oak near Bensen's. Two Wood 
Pewees there & two more at Ball's Hill.
Started Mourning W. [Mourning Warbler] among squash vines at
rear of our flower garden.
Spent most of forenoon following Warblers
about in woods at Farm. Walked to & 
around Ball's Hill in late P.M. (4.30-6)
Henry golfing in A.M., motoring with
Gilbert [Robert A. Gilbert] in P.M.

Concord (Farm & Ball's Hill )
Ther [Thermometer] Thursday, Sept. 10, 1914 [September 10, 1914] Wea [Weather]
Bay-breast [Bay-breasted Warbler] & Blackburnian Warblers. Fine
Partly sunny, partly cloudy. Cool with fresh N. [North] wind.
  Warblers in greatly reduced numbers as
compared with yesterday but still plentiful,
especially the Bay-breasts [Bay-breasted Warbler] & Blackburnians [Blackburnian Warbler].
In woods bordering on run near Cedar Park
saw 2 Mniotiltas, several Redstarts, a Canadian
Warbler [Canada Warbler], at least 3 juv [juvenile] [male] Bay-breasts [Bay-breasted Warbler], 2 juv. [juvenile]
Black-polls [Blackpoll Warbler], 3 or 4 Blackburnians [Blackburnian Warbler], 2 Chestnut
sides [Chestnut-sided Warbler], a Magnolia [Magnolia Warbler], a Swainson's Thrush & an
adult [male] Scarlet Tanager in full aut. pl. [autumn plumage]
Two Blackburnians [Blackburnian Warbler], a Bay-breast [Bay-breasted Warbler] & a Redstart
came into locust front of house as we sat at
dinner. After it we (Henry H. [Henry W. Henshaw], Smith Dexter
& I walked to Ball's Hill: At Pine Hill
found a large mixed flock but its
numbers were so wild & restless that we
identified only a few Yellow-rump [Yellow-rumped Warbler], a 
D. virens [Dendroica virens] & 2 Canada Nuthatches.
A flock of about 25 Warblers on crest
of Ball's Hill & driven thence to Bensen's knoll
seemed to be made up chiefly of Bay-breasts [Bay-breasted Warbler]
& Blackburnians [Blackburnian Warbler] with a few Redstarts (one ad [adult male]).
Two Blackburnians [Blackburnian Warbler] & a Bay-breast [Bay-breasted Warbler] seen on Holden Hill.
A Tennessee [Tennessee Warbler] (very white beneath) in birch at
Bensen's landing. Only a Black-poll [Blackpoll Warbler] & a
Redstart in Birch Field.