Lake Umbagog 
Cambridge River Marshes
1896
October 1
  Cloudy with N.W. wind and occasional light showers.
I sailed over to Upton at the usual time this morning seeing
nothing worth noting on the way. The flats were utterly deserted
and the small waders which have spent the last two days
there must have left during the night. They were there last
evening when I passed the flats a little after sunset.
  I had a very busy day at Upton and my start back was
deferred until long after sunset. It was a gloomy evening
with black, threatening sky but only a little wind. Nothing
of interest occurred until I had reached the outlet of the upper
meadow pond when the Great Horned Owls began calling among
the stubs [delete][?][/delete] then both uttering the husky scream which
I have described in this journal under the date of August 28th[.]
Presently I saw one of them perched on a stub on the end
of the rocky island (the Ospreys frequently sit on this stub
by day). I changed my shells & was starting to paddle
towards the bird when a whiff-whuff-whuff of
beating wings was heard behind me and the choking
scream sounded in my very ears. The next instant
a huge bird sailed directly over me on set wings
passing literally six feet of my head. Just as
it reached the river bank on the marshy (south) side
and dropped its legs, evidently with the intention of
alighting. I fired bringing it down with a broken wing
& firing another shot to finish it. It was in full
plumage but the bill had some patches of light color
indicating immaturity. This experience definitely settles
the authorship of this night cry but is it made
only be the young Bubo? It was very wild & piercing
in the still air to-night & reminded me of the 
night call of Swainson's Thrush but it is louder and huskier
[margin]Bubo Virginianus[/margin]