The colorful Yosemite toad was once one of the most common high-elevation Sierra amphibians. Active for only four to five months per year, it has just a short time in which to reproduce and eat enough ...

The male Yosemite toad (Anaxyrus canorus) can mate like mad every year—for about two weeks. Only in late spring. And only in wet meadows, at elevations above 4,800 feet, in California’s Sierra ...

Scientists have shown a direct link between nonnative fish stocking and these declines, which are devastating such species as the golden trout, Lahontan cutthroat trout, mountain yellow-legged frog, ...