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Oregon Birds--Conservation Text
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When the condor sailed the Columbia

The decline of the California condor is discussed in this article. Once a frequent flyer along the Columbia River in Oregon, the bird has became a stranger as numbers dwindled.

Averill, Edgar F., 1881-1955

Birds that need help

Article discussing conservation efforts and endangered bird species, including the trumpeter swan, California condor, and bald eagle.

Averill, Edgar F., 1881-1955

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