Cambridge, Mass.
1909
May 31
  My neighbor Mr. Blackwell tells me that the
Cat-bird in our garden sang through practically the 
whole of last night keeping two of the members of the
Blackwell family awake. I heard him at midnight
and twice later on, before daybreak, pouring out his
rich and varied notes with ceaseless energy & vigor.
The night was cloudless and cool with a half
moon which shed a clear if subdued light. I
cannot remember ever before hearing a Cat-bird
sing at night although the Mockingbird habitually 
does so when there is a moon.
June 1
  The Cat-bird sang freely at sunset last evening and
was silent after that until 9.30 P.M. when he began
again and sang almost continuously until 11.30 when
I dropped asleep. Whenever I awoke (& it was many
times) between midnight & daybreak this remarkable bird
was making the garden ring with his music.
Cat bird sings all night