Brown Bears
are also know as Grizzle bears. The Grizzly bear feeds on berries, roots,
bulbs of plants, ground dwelling rodents, and most importantly whitebark pine
nuts. Sometimes grizzlies will locate a cache of these nuts that a ground
squirrel has stored for the winter. With their excellent sense of smell, grizzlies
can locate carrion from miles away and will readily feed on it. Grizzlies
may also prey on moose, elk, mountain goats and mountain sheep. During the
spring months, grizzlies also feed on the calves of these animals. Another
major food source for grizzlies are army cutworm moths. During the summer
months in the Yellowstone area, these moths congregate on sub-alpine plants
located above the timberline at elevations higher than 10,000 feet. During
the early morning hours these moths drink nectar and then during the day they
cluster on the surrounding rocks. Grizzlies from all around climb to these
high elevations to consume 10,000 to 20,000 of these moths a day. At times
like this, when food is abundant, numerous grizzlies will congregate and feed
together. Once the food source is depleted, the grizzlies will go their separate
ways in search of other food
