Concord, Mass.
1912
April 1-
July 1

  Turdus fuscescens. - In normal numbers. Two [males] singing in 
the swamp behind Ball's Hill, one in Davis' Hill Swamp, two in
Pine Park Swamp, two opposite the cabins near the boat house,
one near Birch Field just behind Bennet's Spring. There was one
in the Run at the Farm on May 2, 3 & 15 & 31st and another in
the Berry Pastures on the 25th. I heard the first Veery sing this
year on May 16th [May 16, 1912] just ten days after the arrival of the 
first bird.
  Turdus a. bicknelli. - At 1 P.M. on May 21 [May 21, 1912] I heard a Gray-cheeked
Thrush sing several times on the south slopes of Ball's Hill. It
was really fine voice. The next day [May 22, 1912] I saw in the same
place a typical small bicknelli [Turdus a. bicknelli] which I think must have been
the same bird. No other Gray-cheeks noted by me this spring.
  Turdus swainsoni. - Several noted between May 17 & 25. One
was singing freely at 9 A.M. on the 23rd [May 23, 1912] in plane trees near
our farm house.
  Turdus pallasii. - Very scarce this spring owing, no doubt, 
to heavy loss in the south last winter. The only bird
certainly a north bound migrant was one seen on April 20 [April 20, 1912]
at Ball's Hill. In Birch Field one was seen by Gilbert on
May 2 [May 2, 1912] and two on the 11th [May 11, 1912]. On June 1, 5, & 21 I
heard a male in full song in oak woods on the northern
edge of Birch Field.
  Merula migratoria. - Robins, also, were very scarce. At
the Farm we had only two breeding pairs. There was a pair
nesting at Ball's hill & two pairs in Parker's Orchard, W. Bedford [West Bedford].
Not over 10% of usual number anywhere in our neighbourhood.
No chorus singing this year.