18
Spring and early summer.
Concord, Mass.
1913

19. Usnea Warbler. Arrived May 6 [May 6, 1913]. Last seen (3 [males singing]) on 25th [May 25, 1913]. Not numerous at
any time this season.

20. Yellow Warbler. - Arrived April 26 [April 26, 1913]. Through May and June a [male] sang regularly
in shrubbery in our garden at the Farm and another in the extensive
flooded thicket of maples, button bushes etc. opposite Ball's Hill. I
occasionally heard a third near Pad Island and a fourth in an apple 
orchard near W. Bedford [West Bedford] station. No north-bound migrants noted.

21 Black-throated Blue Warbler. S.O. Dexter [Smith Owen Dexter] noted a [male] (singing) in
Fairyland and another in woods behind Bensen's, on May 17 [May 17, 1913].

22 Yellow-rumped Warbler. Much less numerous than usual. April flight
(beginning on 20th [April 20, 1913]) especially light, no more than 4 birds being noted in any
one day. Maximum number (6) seen on May 4 [May 4, 1913]. Last seen on the 10th [May 10, 1913].

23 Magnolia Warbler. - May 14-25. Migration light this year. I noted
only 5 birds in all, finding them at the Farm (in the Berry Pasture, in
the run, and in Birch Field). The [males] sang freely - in low evergreens mostly.

24 Chestnut-sided Warbler. - Arrival May 3 [May 3, 1913]. All the usual breeding 
stations occupied. At the Farm at least 3 males sang regularly in
the Berry Pasture and 1 on the slope below our barn. At Ball's Hill,
where they used to be numerous but have become scarce within recent years,
I could find only one singing bird - in the large swamp. There was
another at Birch Island.

25 Bay-breasted Warbler. - A [male] singing freely among dense young pines
near Pulpit Rock on the morning of May 25 [May 25, 1913]. No others noted.