Concord, Mass.
1899.
June
(d) 
  Turdus mustelinus.- Heard three or four different
males singing in the Estabrook woods and one at the
Barrett farm on the 9th & 24th, on the latter occasion
in the oak grove directly behind the barn.
  Turdus fuscescens.- About the usual number breeding at
Ball's Hill. Found two nests, both in dry situations; one among
oak leaves at the base of a bunch of oaks on the side of the
hill near its foot& only a few yards from the river path, 
the other in the side of a sandy embankment near the
path to Davis's Hill. The former nest contained 3 eggs on
May 28 and 3 young apparently only a few hours old on 
June 12th.
  Troglodytes aedon.- One singing in the apple orchard on the 
George Keyes place June 5 was the only bird that I
met with. I did not hear it after this date although I frequently visited the orchard.
  Cistothorus palustris.- The birds which breed at Beaver Dam
Rapid just above Ball's Hill always arrive late. I
heard them first over there this season June 1st. As I
left the cabin shortly after this date I did not make
any further observations on this colony which seldom contains 
more than two or three pairs.
  Dendroica discolor.- Prairie Warblers have bred in 
the Walden woods rather numerously since this region 
was transformed by the great fire three or four years ago.
I heard two males singing there this month one on the
23rd, the other on the 26th, both near the Walden woods
104 