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| During the first warm, windless morning of Spring 2009, a male House Finch on Nob Hill, San Francisco, is seen looking South toward Silicon Valley. When the wind doesn't blow, the smog builds up quickly. A City Birds digital photo. |
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| During the first warm, windless morning of Spring 2009, a male House Finch on Nob Hill, San Francisco, is seen looking South toward Silicon Valley. When the wind doesn't blow, the smog builds up quickly. A City Birds digital photo. |
| <--- BACK |