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2004 Results: Los Osos, 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
Brant 3,947       18      
Canada Goose 2       1      
Eurasian Wigeon 3       2      
American Wigeon 860       13      
Mallard 156       11      
Blue-winged Teal 39       5      
Cinnamon Teal 71       7      
Northern Shoveler 196       11      
Northern Pintail 206       10      
Green-winged Teal 549       13      
Greater Scaup 53       2      
Lesser Scaup 665       4      
Surf Scoter 550       3      
White-winged Scoter 1       1      
Bufflehead 103       8      
Red-breasted Merganser 3       3      
Ruddy Duck 207       10      
California Quail 216       6      
Pacific Loon 4       4      
Common Loon 4       2      
Pied-billed Grebe 8       5      
Eared Grebe 13       5      
Western Grebe 74       5      
Clark's Grebe 1       1      
Brandt's Cormorant 562       3      
Double-crested Cormorant 800       3      
Pelagic Cormorant 56       3      
American White Pelican 85       6      
Brown Pelican 1       1      
Great Blue Heron 27       10      
Great Egret 21       10      
Snowy Egret 91       12      
Green Heron 1       1      
Black-crowned Night-Heron 15       3      
Turkey Vulture 108       21      
Osprey 1       1      
White-tailed Kite 5       5      
Northern Harrier 9       7      
Sharp-shinned Hawk 2       2      
Cooper's Hawk 5       4      
Red-shouldered Hawk 8       8      
Red-tailed Hawk 22       15      
American Kestrel 19       10      
Merlin 2       2      
Peregrine Falcon 1       1      
Prairie Falcon 2       2      
American Coot 679       13      
Black-bellied Plover 94       8      
Semipalmated Plover 51       4      
Killdeer 27       5      
Black Oystercatcher 5       3      
American Avocet 739       10      
Spotted Sandpiper 3       2      
Wandering Tattler 1       1      
Greater Yellowlegs 15       7      
Willet 426       12      
Whimbrel 6       2      
Long-billed Curlew 37       5      
Marbled Godwit 248       13      
Ruddy Turnstone 3       1      
Black Turnstone 19       2      
Surfbird 7       1      
Sanderling 584       4      
Western Sandpiper 1,950       6      
Least Sandpiper 457       3      
Short-billed Dowitcher 3       1      
Long-billed Dowitcher 17       2      
Bonaparte's Gull 1       1      
Heermann's Gull 6       3      
Mew Gull 1       1      
Ring-billed Gull 125       5      
Western Gull 159       13      
California Gull 7       4      
Herring Gull 3       3      
Glaucous-winged Gull 4       3      
Caspian Tern 4       2      
Forster's Tern 8       2      
Rock Pigeon 15       1      
Eurasian Collared-Dove 20       5      
White-winged Dove 1       1      
Mourning Dove 87       18      
Barn Owl 4       2      
Great Horned Owl 4       2      
Short-eared Owl 1       1      
White-throated Swift 37       3      
Anna's Hummingbird 45       20      
Rufous Hummingbird 2       2      
Allen's Hummingbird 7       5      
Belted Kingfisher 4       4      
Acorn Woodpecker 1       1      
Red-breasted Sapsucker 2       2      
Nuttall's Woodpecker 3       2      
Downy Woodpecker 2       2      
Hairy Woodpecker 2       2      
Northern Flicker 23       8      
Black Phoebe 7       7      
Say's Phoebe 5       4      
Loggerhead Shrike 1       1      
Hutton's Vireo 4       2      
Steller's Jay 4       1      
Western Scrub-Jay 97       29      
American Crow 456       23      
Chestnut-backed Chickadee 33       9      
Oak Titmouse 3       2      
Bushtit 82       15      
White-breasted Nuthatch 1       1      
Canyon Wren 1       1      
Bewick's Wren 31       17      
Pacific Wren 2       2      
Marsh Wren 1       1      
Blue-gray Gnatcatcher 2       2      
Ruby-crowned Kinglet 27       9      
Wrentit 74       17      
Western Bluebird 16       4      
Hermit Thrush 2       2      
American Robin 18       6      
Northern Mockingbird 13       11      
California Thrasher 17       11      
European Starling 194       11      
American Pipit 5       1      
Cedar Waxwing 25       1      
Orange-crowned Warbler 3       2      
Common Yellowthroat 10       6      
Yellow-rumped Warbler 126       16      
Townsend's Warbler 8       4      
Spotted Towhee 18       12      
Rufous-crowned Sparrow 4       1      
California Towhee 72       20      
Chipping Sparrow 1       1      
Vesper Sparrow 1       1      
Sage Sparrow 1       1      
Savannah Sparrow 12       3      
Fox Sparrow 2       2      
Song Sparrow 14       5      
Lincoln's Sparrow 1       1      
White-throated Sparrow 1       1      
White-crowned Sparrow 351       27      
Golden-crowned Sparrow 210       15      
Dark-eyed Junco 46       7      
Red-winged Blackbird 256       8      
Tricolored Blackbird 3       1      
Western Meadowlark 53       5      
Brewer's Blackbird 1,180       14      
Brown-headed Cowbird 3       2      
Purple Finch 2       1      
Cassin's Finch 24       2      
House Finch 108       17      
Lesser Goldfinch 30       8      
American Goldfinch 129       11      
House Sparrow 79       10      
Total 19,592             

A total of 150 species were reported.

See a summary for California.

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