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After a couple of hours trying to catch up with a boreal owl on the south 
side of Bog Lake (Lake County, BWCA) Saturday night, it finally stayed in 
one place long enough for Norma Malinowski and I to watch it singing from 
a large white spruce. A little while later we found it singing from a cavity in 
a dead aspen. If itís successful in attracting a female, this could become a 
nesting cavity, although thatís not a given because males usually have 
multiple cavities in their home ranges where they alternate singing, anyone 
of which could become the nest tree. Unfortunately, the access to this bird 
is not easy. It requires hiking most of the way (~3/4 mile) into Bog Lake 
on the portage, and then up to a 1/2-mile cross-country hike east, 
depending upon where in its territory the bird is (hopefully) singing, 
through dense forest and difficult terrain. Neither of the other boreal owls 
heard last week were heard last night. I posted a recording of this bird to 
the MOU Audio page (http://moumn.org/cgi-bin/audio.pl), which hopefully 
will become functional before too long.

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