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The scientists used GPS technology to track the movements of hundreds of moose
and bighorn sheep/Some belonged to older sroupshatjhad lived in the west for more
than 200 years。 while others were part of newer groups that had recently been
to the area/The result was that almost all the members of older grOupS migrated at the
right time between the higher and the lower parts of the mountains However。 newer
groups usually moved at the wrong time or did not move at all. In fact。 among animals
that arrived within the last 10 years。only 9 percent were able to make the move
Successfully.
In addition, the scientists recorded how much food was available along the migration
routes that each animal iook/T hey found that animals from older groups chose routes that
had arge amounts of food一sometimes traveling great distances between food sources.
However, animals from newer groups only moved to nearby sources of food that they
could Ss to the scientists。this shows that moose and bighorn sheep have
gained Knowledge of the best routes from older members of their groups, but this
knowledge did not exist in the newer grOUDS.
