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2011 Results: Castro Valley, California

This town report includes all data submitted to the town and to all postal codes associated with the town.

Other years: 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012


Species [taxonomic]
[alphabetic]
Number of Birds   Number of Checklists
Reporting the Species
Greater White-fronted Goose 1       1      
Ross's Goose 2       1      
Canada Goose 12       2      
Mallard 19       3      
Ring-necked Duck 39       2      
Bufflehead 1       1      
Ruddy Duck 17       3      
Wild Turkey 10       2      
Pied-billed Grebe 2       2      
Double-crested Cormorant 2       2      
Great Blue Heron 2       2      
Turkey Vulture 4       3      
White-tailed Kite 1       1      
Sharp-shinned Hawk 1       1      
Cooper's Hawk 3       3      
Red-shouldered Hawk 7       5      
Red-tailed Hawk 7       4      
American Kestrel 1       1      
American Coot 11       4      
Killdeer 2       1      
Wilson's Snipe 7       1      
Rock Pigeon 40       1      
Mourning Dove 19       8      
Great Horned Owl 1       1      
Anna's Hummingbird 14       11      
Allen's Hummingbird 1       1      
Acorn Woodpecker 1       1      
Nuttall's Woodpecker 6       5      
Downy Woodpecker 2       2      
Northern Flicker 5       3      
Black Phoebe 3       3      
Hutton's Vireo 3       3      
Steller's Jay 4       3      
Western Scrub-Jay 18       8      
American Crow 62       7      
Common Raven 1       1      
Violet-green Swallow 36       1      
Chestnut-backed Chickadee 26       14      
Oak Titmouse 8       7      
Bushtit 12       5      
Red-breasted Nuthatch 3       3      
Pygmy Nuthatch 2       1      
Brown Creeper 3       3      
Bewick's Wren 7       5      
House Wren 1       1      
Blue-gray Gnatcatcher 2       1      
Ruby-crowned Kinglet 5       3      
Wrentit 7       4      
Western Bluebird 3       1      
Hermit Thrush 3       2      
American Robin 93       11      
Varied Thrush 2       1      
Northern Mockingbird 6       3      
European Starling 100       1      
Cedar Waxwing 17       2      
Orange-crowned Warbler 1       1      
Yellow-rumped Warbler 6       4      
Townsend's Warbler 3       3      
Spotted Towhee 5       4      
California Towhee 28       15      
Savannah Sparrow 4       1      
Fox Sparrow 3       2      
Song Sparrow 12       5      
Lincoln's Sparrow 3       1      
White-crowned Sparrow 19       6      
Golden-crowned Sparrow 62       9      
Dark-eyed Junco 42       11      
Red-winged Blackbird 1       1      
Western Meadowlark 25       1      
Brewer's Blackbird 12       1      
Purple Finch 13       5      
House Finch 59       8      
Pine Siskin 11       2      
Lesser Goldfinch 75       8      
American Goldfinch 14       4      
Total 1,065             

A total of 75 species were reported.

See a summary for California.

This report was updated 15-Jan-2013 09:05 ET.