A 6-year study of Colorado bears is
upending assumptions about their
encounters with humans
Researchers began their study in response to rising numbers
of human-bear conflicts and the changing climate
April 2, 2017
DURANGO – Curled up in a den on an
acorn-rich hillside, a hibernating bear
and her three fuzzy cubs face
increasingly perilous conditions.
People in homes 200 yards below
constantly tempt them with food —
this 180-pound sow knows well
how to navigate garbage-scented
urban smorgasbords in late summe
if acorns and berries vanish. But
state policy requires extermination
of bears repeatedly caught eating
garbage. Record numbers are dying.
And the dozing bears also feel
warmer temperatures near their rocky
den that shorten hibernation.
Now, near the top of the hill, a Colorado
Parks and Wildlife research team with
a tranquilizer dart on a 6-foot jab pole
is creeping toward them.
This den visit is one of the last in a
six-year study of black bears in
Colorado that challenges core
assumptions state wildlife managers
have relied on for decades. Rising
conflicts with people motivated the
CPW study, which will be published
this year. Seldom have scientists
tracked and monitored so many
bears so closely, even analyzing
fur to verify what bears ate.
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