Endangered Arizona squirrel drops in numbers

The estimated number of endangered Mount Graham squirrels that make their home atop the Pinaleno Mountains in southeastern Arizona is among its lowest in the past 15 years, but biologists are hopeful the small mammals will rebound.

Environmentalists, on the other hand, aren't so optimistic. They say the species won't be on the path to recovery without a significant effort to protect their habitat in the high elevation spruce-fir forest.

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