1912 
September 19 
Might c alls 
of 
migrating 
Thrushes 
Mysterious 
nocturnal 
s ounds 
heard at 
jail's Hill 
CONCORD. 
Although I had seen very few birds about, they 
were migrating in some numbers between 10 and 11 P. M. 
when I heard the calls of Warblers or Thrushes every few 
minutes as I sat reading in the cabin with door and window 
open. |One of the Thrush calls repeated several times 
within my hearing was evidently that of either a Gray¬ 
cheeked or a Bicfcnell's Thrush being, indeed, essentially 
the call we hear by day in June on Mt. Washington but yet 
not quite the same and probably representing the night 
cry of the species. As compared with the day call, it was 
shriller and more strident. The other Thrush calls heard 
seemed to be those of Wilson's Thrush or at least indis¬ 
tinguishable from them. I noted the Wilson's Thrushes at 
the Fa.rm on the afternoon of the 17th, seeing one distinctly 
and very near. ' 
Just after I had gone to bed (at 11 P. M.) some¬ 
thing began making a variety of low, clucking, murmuring 
and twittering sounds just outside my bedroom windows. 
These were repeated at short intervals for half an hour 
or more. They seemed to come from beneath the window, which 
is only about 8 feet above the ground of the steeply- 
sloping, wooded hillside. Some of the clucks were closely 
like those of the Hermit Thrush, but fainter. Every now 
and then I heard a light rustling of dry leaves which I 
thought was made by the author of the vocal notes and 
which was no more than the movements of a Mouse might have 
caused. What the creature was I have no idea. I thought 
