Caribou herd declines 20%

From Times Wire Reports

The state’s largest caribou herd shrank 20% -- or 113,000 -- from 2003 to 2007, according the latest count by the state Department of Fish and Game.

The decline of the Western Arctic Caribou Herd came after years of steady growth.

The reasons are not clear, said Jim Dau, the lead state biologist on the herd since 1988, but warm spells in recent winters may have played a role.