Young common loon chicks rest on the back of their mother at Yellowstone National Park. A weasel blends into snow in Grand Teton. In spring it will molt and turn light brown. Cutthroat trout ...

From two catfish records broken less than three weeks apart (by the same angler) to one of the “smallest” state record fish ...

When they had their data, Smith invited me to kneel in the snow beside the big male and hold up his head for a photo ... intake than any others: cutthroat trout from Yellowstone Lake at spawning ...

Cutthroat Trout are Idaho's "state fish," and the Westslope Cutthroat Trout is one of three subspecies native to the state, along with the Bonneville and Yellowstone Cutthroat Trout. Whitesitt ...

Spawning Yellowstone cutthroat trout (Oncorhynchus clarkii bouvieri). (Jacob W. Frank/NPS) (CN) — The U.S. Forest Service’s plan to swap rainbow trout with Yellowstone cutthroat trout in Montana’s ...