Published February 01, 2013, 12:00 AM
Woodpeckers searching for food have opened holes in a standing dead aspen tree
Woodpeckers searching for food have opened holes in a standing dead aspen tree as seen Thursday, January 24, 2013 at Moose Mountain Scientific and Nature Area near Duluth, Minn. Other animals may enlarge the holes to create homes.
Read the article: DNR eases effort to protect old trees as bird habitat shrinks
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