72

Concord, Mass.
1916
Aug. 30
to
Nov. 4

Migrant Warblers.
Tennessee W [Tennessee Warbler]
W. Palm W [Western Palm Warbler]
Prairie W [Prairie Warbler]
Yellow rump [Yellow-rumped Warbler] & Black-polls [Blackpoll Warbler]
Bay-breasts [Bay-breasted Warbler]

sometimes by dozens or even scores in Birch Field where,
as is their regular custom at this season, they assembled
to feast on the gray-green Aphidae which, however, were not
plentiful enough to attract them numerously until towards
the close of the month. Before then the Warblers were
more widely dispersed and hence less likely to be noticed.
Of the species which may be looked for, not without hope of success,
at such a time and place, every one was met with except
the Connecticut [Connecticut Warbler], the Mourning [Mourning Warbler] and the Orange-crowned [Orange-crowned Warbler].
The Tennessee Warbler was noted thrice (September 4 [September 4, 1916], 5 [September 5, 1916] &
October 5 [October 5, 1916]), the Western Palm [Western Palm Warbler] twice (September 26 [September 26, 1916] & October 22 [October 22, 1916])
and the Prairie Warbler once (September 4 [September 4, 1916]), no more than one
representation of any of these being seen on each occasion. 
Yellow-rumps [Yellow-rumped Warbler] were normally abundant, Black-polls [Blackpoll Warbler]
comparatively scarce - as they have been, both in spring and autumn,
for several seasons past, Bay-breasts [Bay-breasted Warbler] no more plentiful
than they were last autumn and much less so than in that of 1914.