Sierra bighorns on ledge of breakthrough
By Tom Stienstra, San Francisco Chronicle
From a perch above a boulder-strewn ravine, we peered with binoculars up canyon walls and across a steep jumble of rocks and dirt for endangered Sierra Nevada bighorn sheep.
The arrival of spring in the high country is when Sierra bighorns feast on fresh, water-saturated forage in the front country of the Eastern Sierra Nevada outside Bishop.
To some, the spike in population seems to have come out of nowhere. In the late 1990s, about 100 Sierra bighorns were thought to be left on the planet; the latest count was roughly 600.
