1906
April 16
  Clear and warm with light N.W. wind.
  Heard a Field Sparrow and a Ruby-crowned Kinglet
yesterday morning and a Chippy this morning.
Arrivals
  Purdie and I took a long, leisurely drive this
afternoon starting at 2.30 and getting back at 5.30. We
went first to Concord and thence by the Lowell road to
Carlisle turning by the direct road to the farm. Although
we kept a sharp lookout for birds we saw comparatively
few. Robins were especially scarce but of Bluebirds there
were numbers. The Fox Sparrows and Tree Sparrows have
evidently departed but a few Juncos still linger. We saw
three White-bellied Swallows and two Red-wings near a 
pond in Carlisle. A Pine Warbler was heard singing.
The Yellow Palm Warblers should be here but none have
been noted yet.
  Although we heard Wood Frogs in many places their
short singing season is already ceasing but that of the 
Hylas is at its height. Their clear, silvery voices were
singing far and wide over the land and in several
large meadows that we passed they were making a perfectly
deafening clamor.
  The grass is now very green on sunny banks and along
springy runs in the pastures.