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Research About Birds

  
 
2000 Monthly Census at the
San Joaquin Wildlife Sanctuary
SJWS Census: 2000 Jan Feb Mar Apr May
June
July Aug Sept Oct Nov Dec Total
GREBES
Pied-billed Grebe 44 69 62 38 24 16 19 26 60 35 63 71 527
Eared Grebe 26 35 34 27 7 1 . . . 2 43 24 199
Western Grebe 4 4 3 4 1 1 . . . 4 16 14 51
Clark's Grebe 1 1 1 1 . 1 . . . . 1 . 6
PELICANS & CORMORANTS
American White Pelican 100 1 . . . . . . . . . 100 201
Brown Pelican . . . . . . . . . 7 9 3 19
Double-crested Cormorant 38 71 71 78 14 16 34 26 15 9 26 100 498
HERONS & EGRETS
American Bittern cw 1 . . . . . 2 2 . . 1 . 5
Least Bittern . . . . . 1 1 1 . . . . 3
Great Blue Heron 10 6 8 20 5 6 17 12 22 11 22 20 159
Great Egret 10 12 3 6 6 7 18 41 21 19 8 16 167
Snowy Egret 15 8 4 14 14 10 36 114 22 21 28 37 323
Cattle Egret . . . . 4 . . . . 1 . . 5
Green Heron . 1 . 11 . 3 8 12 6 . 1 4 46
Black-crowned Night-Heron 65 54 14 28 21 19 31 61 30 23 30 70 446
IBIS
White-faced Ibis . . . 5 3 1 3 . . . . 2 14
GEESE & DUCKS
Canada Goose 80 95 . 13 . . . . . . 2 4 194
Mallard 37 29 104 118 1`27 201 285 327 83 28 30 79 1321
Gadwall 7 1 11 2 45 31 4 1 12 2 8 1 125
Green-winged Teal 73 142 120 45 . 1 . . 8 57 74 145 665
American Wigeon 2 6 7 11 . . . . 3 2 . 6 37
Northern Pintail 57 62 1 1 2 . . . 103 4 2 56 288
Northern Shoveler 484 492 538 249 8 3 3 . 102 6 87 450 2422
Blue-winged Teal . . . 2 6 . 2 . . . . 2 12
Cinnamon Teal 51 92 98 73 14 34 42 17 145 45 27 38 676
Canvasback  4 5 . . . . . . . . 1 . 10
Redhead 45 16 2 . . 2 . . . . . . 65
Ring-necked Duck 59 82 56 1 . . . . . 1 14 2 215
Red-breasted Merganser . 1 . . . . . . . . . . 1
Hooded Merganser . 1 . . . . . . . . . . 1
Lesser Scaup 3 10 27 5 . . . . . . 1 . 46
Bufflehead 34 . 50 3 . . . . . . . 23 110
Wood Duck . . . . . . . . 1 . . . 1
Ruddy Duck  221 496 729 278 184 118 31 29 41 76 78 . 2281
SJWS Monthly Census: 2000 JAN FEB MAR APR MAY JUNE JULY AUG SEPT OCT NOV DEC Total
RAILS . . . . . . . . . . . . .
Virginia Rail . . . . . . . . 2 1 . . 3
Sora 2 2 1 1 1 3 1 . 6 1 1 . 19
Common Moorhen . 1 1 . . . . 4 5 3 5 10 29
American Coot 286 205 222 205 123 91 46 86 73 84 198 170 1789
STILTS & AVOCETS . . . . . . . . . . . . .
Black-necked Stilt 106 162 126 63 34 70 64 141 10 3 66 170 1015
American Avocet 177 42 15 66 41 49 72 29 37 8 87 7 630
PLOVERS . . . . . . . . . . . . .
Black-bellied Plover . . 1 . . . . . . . . . 1
Semipalmated Plover 4 . . . . . 1 24 . . . cw 1 29
Killdeer 16 86 31 20 26 49 31 77 143 6 83 10 578
SHOREBIRDS . . . . . . . . . . . . .
Marbled Godwit . . 3 . . 2 . 3 3 2 . . 13
Whimbrel . . . . 7 . . . . . . . 7
Long-billed Curlew . . . . . . . . . . . . 0
Willet . 1 . . . 4 . . . . . . 5
Greater Yellowlegs 8 2 1 2 . . 2 2 5 . . . 22
Lesser Yellowlegs . . . . . 1 1 3 2 . . . 7
Spotted Sandpiper 1 2 2 . 6 . 1 5 6 6 3 1 33
Solitary Sandpiper . . . . . . . . . . . . 0
Wilson's Phalarope . . . . . . . . cw 4  . . . 0
Red-necked Phalarope . . . . . . . . 6 . . . 6
Short-billed Dowitcher . . . . 3 . . 4 3 23 . . 33
Long-billed Dowitcher 74 . . 9 . . . 10 5 . 60 225 383
dowitcher species . 171 114 16 28 . 8 . 2 . 55 . 394
Dunlin . . . . . . . . . . 4 . 4
Common Snipe 2 . 1 . . . . . . 1 1 . 5
Western Sandpiper 4 . 1 127 21 . . 36 215 2 51 44 501
Least Sandpiper 120 4 12 10 . . . 6 72 6 17 32 279
Pectoral Sandpiper . . . . . . . . . . . . 0
Baird's Sandpiper . . . . . . . . . . . . 0
Ruff . . . . . . . . . . . . 0
SJWS Monthly Census: 2000 JAN FEB MAR APR MAY JUNE JULY AUG SEPT OCT NOV DEC Total
GULLS & TERNS . . . . . . . . . . . . .
Bonaparte's Gull . . 1 . . 1 . . . . 3 4 9
Ring-billed Gull 55 24 3 4 1 1 3 4 10 4 17 20 146
California Gull . . . . 1 . . . 1 2 3 4 11
Western Gull . . . . . 1 . . . 2 . . 3
Forster's Tern 11 6 1 19 15 55 160 75 7 12 6 40 407
California Least Tern . . . 2 3 16 15 12 1 . . . 49
Elegant Tern . . . 2 . . . . . . . . 2
Caspian Tern . . . . 3 15 5 20 29 17 . 2 91
Black Tern . . . . . . . . . . . . 0
Black Skimmer . . . . . 4 28 25 2 2 . . 61
DIURNAL BIRDS of PREY . . . . . . . . . . . . .
Turkey Vulture 35 4 12 6 20 1 6 3 1 39 1 9 137
White-tailed Kite . . . 1 . 1 1 1 . . . . 4
Northern Harrier 2 3 3 2 1 . . . 1 1 4 4 21
Sharp-shinned Hawk 1 3 1 1 . . . . . 1 1 . 8
Cooper's Hawk . 1 . 2 1 . . 2 1 1 1 1 10
Red-shouldered Hawk 2 2 1 . 1 . 1 . 1 1 2 4 15
Red-tailed Hawk 7`7 7 2 . . . . . . 1 1 4 15
Osprey 2 . 1 1 . . . . 2 . 1 . 7
Golden Eagle . . . . . . . . . . . cw 1 cw 1
American Kestrel 1 . . . . . . . . 2 3 1 7
Merlin . . . . . . . . . . . . 0
Peregrine Falcon . . . . . . . . . . 1 . 1
OWLS . . . . . . . . . . . . .
Barn Owl . . . . . . . . . . . . 0
Great Horned Owl . . . . . . . . . . . . 0
Short-eared Owl . . . . . . . . . . . . 0
QUAIL & DOVES . . . . . . . . . . . . .
California Quail . . . . . . . . . . . . 0
Rock Dove 2 2 . . . . . . 32 13 2 . 51
Mourning Dove 19 27 36 29 46 23 47 28 32 37 13 12 349
Common Ground-Dove . . . . . . . 1 . 1 6 . 8
SJWS Monthly Census: 2000 JAN FEB MAR APR MAY JUNE JULY AUG SEPT OCT NOV DEC Total
NIGHTHAWKS & SWIFTS  . . . . . . . . . . . . .
Lesser Nighthawk . . . . . . . 1 . . . . 1
Vaux's Swift . . . . . . . . . . . . 0
White-throated Swift . . 6 1 1 3 2 . . . 100 113
ROADRUNNERS . . . . . . . . . . . . .
Greater Roadrunner 1 . . . 1 . . . . . . . 2
HUMMINGBIRDS . . . . . . . . . . . . .
Black-chinned Hummingbird . . . . . . . . . . . . 0
Anna's Hummingbird 37 25 2 12 11 6 8 17 22 21 44 39 244
Allen's Hummingbird . 1 . 2 1 1 . 2 3 . . 8 18
KINGFISHERS . . . . . . . . . . . . .
Belted Kingfisher 1 . . . . . . . 3 . . . 4
WOODPECKERS . . . . . . . . . . . . .
Northern Flicker . 1 1 . . . . . . 1 4 1 8
Downy Woodpecker . . . . . . 5 1 2 2 . . 10
Nuttall's Woodpecker 1 1 1 4 2 . 2 1 2 1 1 1 17
FLYCATCHERS . . . . . . . . . . . . .
Western Kingbird . . . . 3 . . . . . . . 3
Cassin's Kingbird 3 3 1 . . . 1 2 . . 8 1 19
Ash-throated Flycatcher . . . 1 1 . . . 1 . . . 3
Black Phoebe 17 24 24 10 13 8 14 15 23 24 35 30 237
Say's Phoebe 1 2 . . . . . . . 1 2 3 9
Pacific-slope Flycatcher 1 . . . 1 . . . . . . . 2
Western Wood-Pewee 1 . . . . . . . . . . . 1
Willow Flycatcher . . . . . . . . . . . . 0
SWALLOWS . . . . . . . . . . . . .
Tree Swallow 1 20 469 370 106 110 77 4 5 24 . . 1186
Violet-green Swallow . . 2 . . . . . . . . . 2
Bank Swallow cw 1 . . . . . . . . . . . 0
N. Rough-winged Swallow 10 . 36 49 52 55 33 . . 24 . . 259
Cliff Swallow . . . 299 234 240 115 91 252 4 . . 1235
Barn Swallow 1 . . 12 10 . 10 1 69 133 . . 236
SJWS Monthly Census: 2000 JAN FEB MAR APR MAY JUNE JULY AUG SEPT OCT NOV DEC Total
CROWS & RAVENS . . . . . . . . . . . . .
American Crow 19 6 11 18 38 40 18 9 20 231 33 12 455
Common Raven 5 . 2 3 7 1 2 1 2 . . 1 24
BUSHTITS & WRENS . . . . . . . . . . . . .
Bushtit 42 57 50 85 37 5 42 33 43 65 35 2 496
Bewick's Wren 1 4 4 . . . . . . 1 . . 10
House Wren 1 . . . 1 . . 1 . 1 . . 4
Marsh Wren 16 34 306 56 55 66 80 20 103 63 49 22 870
KINGLETS & GNATCATCHERS . . . . . . . . . . . . .
Ruby-crowned Kinglet 4 5 3 1 . . . . . . 2 8 23
Blue-gray Gnatcatcher 3 9 10 8 . . . . . 4 7 9 50
THRUSHES . . . . . . . . . . . . .
Hermit Thrush . 1 . . . . . . . . 1 1 3
Swainson's Thrush . . . . . . . . . . . . 0
MOCKINGBIRDS & SHRIKES . . . . . . . . . . . . .
Northern Mockingbird 1 3 4 2 3 . 4 1 3 5 3 6 35
Loggerhead Shrike . . . . . . . . . . . . 0
PIPITS  . . . . . . . . . . . . .
American Pipit 80 290 53 5 . . . . . . 3 13 444
WAXWINGS . . . . . . . . . . . . .
Cedar Waxwing 5 100 20 . 12 . . . . . 5 100 242
STARLINGS . . . . . . . . . . . . .
European Starling 55 10 . 7 8 . 1 1 1 2 3 1 89
VIREOS . . . . . . . . . . . . .
Warbling Vireo . . . . . . . . . . . . 0
Hutton's Vireo . . . . . . . . . . . . 0
Bell's Vireo . . . . . . . . . . . . 0
WARBLERS . . . . . . . . . . . . .
Orange-crowned Warbler . 4 . 8 1 . . . 7 1 1 . 22
Nashville Warbler . . . . 2 . . . . . . . 2
Yellow-rumped Warbler 12 183 36 46 . . . . . 23 60 54 414
Townsend's Warbler . 3 . . 3 . . . . . . . 6
Yellow Warbler . . . . 2 . . . . . . . 2
Wilson's Warbler . 3 . 3 16 . . . . . . 3 25
Common Yellowthroat 80 81 97 79 117 43 113 30 172 95 86 110 1103
Yellow-breasted Chat . . . . . . 3 . . . . . 3
Black-throated Gray Warbler 1 2 . . . . . . . . . . 3
Hermit Warbler . . . . . . . . . . . . 0
SJWS Monthly Census: 2000 JAN FEB MAR APR MAY JUNE JULY AUG SEPT OCT NOV DEC Total
SPARROWS . . . . . . . . . . . . .
Black-headed Grosbeak . . . 1 1 1 . . . . . . 3
Blue Grosbeak . . . . . 1 1 . . . . . 2
Lazuli Bunting . . . . . . . . . . . . 0
California Towhee 4 3 . 3 1 1 1 1 . . 2 . 16
Spotted Towhee . . 2 3 1 . 1 . . 1 1 . 9
Savannah Sparrow 5 6 1 1 1 . 4 . 4 2 2 . 26
Song Sparrow 97 153 124 182 202 116 121 36 210 133 125 106 1605
Lark Sparrow . . . . . . . . . . . . 0
Chipping Sparrow . . . . . . . . . . . . 0
White-crowned Sparrow 19 133 118 81 1 . . . . 49 100 110 611
Golden-crowned Sparrow . . . . . . . . . . 2 . 2
Lincoln's Sparrow . . . . . . . . . 1 . 1 2
Brewer's Sparrow . . . . . . . . . . . . 0
BLACKBIRDS & ORIOLES . . . . . . . . . . . . .
Western Meadowlark 2 . . . . . . . . . 1 3 6
Yellow-headed Blackbird . . . . 13 . . . 2 . . . 15
Red-winged Blackbird 53 96 128 121 64 48 485 132 845 57 12 83 2124
Brewer's Blackbird . . . 1 . . 2 . . . . . 3
Brown-headed Cowbird . . . 3 . . . 1 . . . . 4
Great-tailed Grackle . 2 1 3 . 3 11 9 3 . 1 5 38
Bullock's Oriole . . . . . . . 1 . . . . 1
Hooded Oriole . . . 1 . 1 1 . 1 . . . 4
Western Tanager . . . . . . . . . . . . 0
FINCHES . . . . . . . . . . . . .
American Goldfinch 2 5 6 38 . . 34 4 . 3 4 2 98
Lesser Goldfinch 10 18 8 23 . 2 11 . 12 2 4 4 94
House Finch 7 40 48 78 . 30 97 45 44 121 104 40 654
House Sparrow . . . . . . . . . . . . 0
EXOTIC SPECIES . .</