As a research biologist with the U.S. Geological Survey, it’s been Brian Halstead’s job for years to observe the San Francisco garter snake. And he’s constantly startled by its beauty. It has an ...
In an unassuming building at the San Francisco Zoo, 115 brilliantly colored baby snakes are being fattened up on a diet of worms. These are endangered San Francisco garter snakes and during a visit in ...
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