The caribou herd that is at the center of the debate over oil drilling in the Arctic National Wildlife Refuge has declined by ...

One of North America’s largest caribou herds has declined, according to the latest population estimates — but not enough for the Porcupine Caribou Management Board to "put up the red flags yet.” ...

Several caribou herds in Alaska's Arctic are on the decline. That now includes the Porcupine herd, which is the largest. Biologists say the reasons for the downward trends are hard to pin down. Alaska ...

Gwich’in leaders are renewing their legal challenge to protect the Arctic Refuge and the Porcupine caribou herd that has sustained northern communities for generations after US plans reopened the door ...

Two bull caribou of the Western Arctic Caribou Herd swimming across the Kobuk River during fall 2011 migration in Kobuk Valley National Park. The herd has been in decline since hitting its peak ...

Caribou crossing the frozen Porcupine River upstream from Old Crow in the Yukon Territory became trapped when the river’s ice began breaking up. A caribou herd was crossing the frozen Porcupine River ...

The amended lawsuit attacks the leasing program that would open the entire coastal plain of the Arctic National Wildlife Refuge.

Last summer biologists conducted aerial surveys of the Porcupine Caribou herd for the first time in eight years. Despite the decline, the board says it's not raising red flags just yet.

FAIRBANKS, ALASKA — The Porcupine Caribou Herd hit a record high in 2017, according to the results of a July photo census. The new Alaska Department of Fish and Game census puts the herd’s population ...

Add Yahoo as a preferred source to see more of our stories on Google. The Porcupine caribou herd on a patch of snow photographed from an airplane during an aerial survey last year. Biologists take ...