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Date: 2016-04-02 00:43:17California Hetch Hetchy Project Birdwatching United States Citizen science EBird National Audubon Society Yosemite National Park John Muir | Central Sierra Audubon Society Sierra Squawker www.centralsierraaudubon.orgAdd to Reading ListSource URL: centralsierraaudubon.orgDownload Document from Source WebsiteFile Size: 1,66 MBShare Document on Facebook |