Avibase - Bird Checklists of the World
August A. Busch Mem Conservation Area
This checklist includes all bird species found in August A. Busch Mem Conservation Area , based on the best information available at this time. It is based on a wide variety of sources that I collated over many years. I am pleased to offer these checklists as a service to birdwatchers. If you find any error, please do not hesitate to .
The taxonomic order and nomenclature follows Howard and Moore 4th edition (incl. corrigenda vol.1-2). If you prefer to view the list based on a different authority, click on one of the list available below. Globally threatened species (status in red) were identified by Birdlife International in Birdlife Data Zone (species).
Bird Checklists of the World is part of Avibase and Bird links to the World, which are designed and maintained by Denis Lepage, and hosted by Birds Canada, which is a co-partner of Birdlife International.
© Denis Lepage 2025
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Country or region: August A. Busch Mem Conservation Area [map]
Number of globally threatened species: 11
Number of introduced species: 4
Last modified: 2024-11-27
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| Black-bellied Whistling Duck | Dendrocygna autumnalis | Rare/Accidental |
| Ruddy Duck | Oxyura jamaicensis | |
| Trumpeter Swan | Cygnus buccinator | |
| Tundra Swan | Cygnus columbianus | Rare/Accidental |
| Cackling Goose | Branta hutchinsii | |
| Canada Goose | Branta canadensis | |
| Snow Goose | Anser caerulescens | |
| Ross's Goose | Anser rossii | |
| Greater White-fronted Goose | Anser albifrons | |
| Long-tailed Duck | Clangula hyemalis | Rare/Accidental Vulnerable |
| Bufflehead | Bucephala albeola | |
| Common Goldeneye | Bucephala clangula | |
| Hooded Merganser | Lophodytes cucullatus | |
| Goosander | Mergus merganser | |
| Red-breasted Merganser | Mergus serrator | |
| Canvasback | Aythya valisineria | |
| Redhead | Aythya americana | |
| Ring-necked Duck | Aythya collaris | |
| Greater Scaup | Aythya marila | |
| Lesser Scaup | Aythya affinis | |
| Northern Shoveler | Spatula clypeata | |
| Cinnamon Teal | Spatula cyanoptera | Rare/Accidental |
| Blue-winged Teal | Spatula discors | |
| Gadwall | Mareca strepera | |
| American Wigeon | Mareca americana | |
| Mallard | Anas platyrhynchos | |
| American Black Duck | Anas rubripes | |
| Northern Pintail | Anas acuta | |
| Common Teal | Anas crecca | |
| Wood Duck | Aix sponsa | |
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| Northern Bobwhite | Colinus virginianus | Near-threatened |
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| Common Pheasant | Phasianus colchicus | Introduced species |
| Wild Turkey | Meleagris gallopavo | |
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| Pied-billed Grebe | Podilymbus podiceps | |
| Slavonian Grebe | Podiceps auritus | Vulnerable |
| Black-necked Grebe | Podiceps nigricollis | |
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| Eurasian Collared Dove | Streptopelia decaocto | Introduced species |
| Mourning Dove | Zenaida macroura | |
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| Common Nighthawk | Chordeiles minor | |
| Eastern Whip-poor-will | Antrostomus vociferus | Near-threatened |
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| Chimney Swift | Chaetura pelagica | Vulnerable |
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| Ruby-throated Hummingbird | Archilochus colubris | |
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| Black-billed Cuckoo | Coccyzus erythropthalmus | |
| Yellow-billed Cuckoo | Coccyzus americanus | |
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| Yellow Rail | Coturnicops noveboracensis | Rare/Accidental |
| Virginia Rail | Rallus limicola | |
| Sora | Porzana carolina | |
| Common Gallinule | Gallinula galeata | |
| American Coot | Fulica americana | |
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| Limpkin | Aramus guarauna | Rare/Accidental |
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| Sandhill Crane | Antigone canadensis | Rare/Accidental |
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| Great Northern Diver | Gavia immer | |
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| Wood Stork | Mycteria americana | Rare/Accidental |
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| American White Pelican | Pelecanus erythrorhynchos | |
| Brown Pelican | Pelecanus occidentalis | Rare/Accidental |
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| American Bittern | Botaurus lentiginosus | |
| Least Bittern | Ixobrychus exilis | |
| Black-crowned Night Heron | Nycticorax nycticorax | |
| Yellow-crowned Night Heron | Nyctanassa violacea | |
| Green Heron | Butorides virescens | |
| Cattle Egret | Bubulcus ibis | |
| Great Blue Heron | Ardea herodias | |
| Great Egret | Ardea alba | |
| Tricolored Heron | Egretta tricolor | |
| Little Blue Heron | Egretta caerulea | |
| Snowy Egret | Egretta thula | |
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| White Ibis | Eudocimus albus | |
| Glossy Ibis | Plegadis falcinellus | |
| White-faced Ibis | Plegadis chihi | Rare/Accidental |
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| Double-crested Cormorant | Phalacrocorax auritus | |
| Neotropic Cormorant | Phalacrocorax brasilianus | Rare/Accidental |
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| Anhinga | Anhinga anhinga | Rare/Accidental |
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| American Avocet | Recurvirostra americana | Rare/Accidental |
| Black-winged Stilt | Himantopus himantopus | |
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| Grey Plover | Pluvialis squatarola | Vulnerable |
| American Golden Plover | Pluvialis dominica | |
| Semipalmated Plover | Charadrius semipalmatus | |
| Killdeer | Charadrius vociferus | Near-threatened |
| Piping Plover | Charadrius melodus | Rare/Accidental Near-threatened |
| Snowy Plover | Charadrius nivosus | Near-threatened |
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| Upland Sandpiper | Bartramia longicauda | |
| Whimbrel | Numenius phaeopus | Rare/Accidental |
| Marbled Godwit | Limosa fedoa | Rare/Accidental Vulnerable |
| Hudsonian Godwit | Limosa haemastica | Vulnerable |
| Ruddy Turnstone | Arenaria interpres | Near-threatened |
| Ruff | Calidris pugnax | Rare/Accidental |
| Stilt Sandpiper | Calidris himantopus | Near-threatened |
| Sanderling | Calidris alba | |
| Dunlin | Calidris alpina | Near-threatened |
| Baird's Sandpiper | Calidris bairdii | |
| Least Sandpiper | Calidris minutilla | Near-threatened |
| White-rumped Sandpiper | Calidris fuscicollis | Vulnerable |
| Buff-breasted Sandpiper | Calidris subruficollis | Vulnerable |
| Pectoral Sandpiper | Calidris melanotos | |
| Semipalmated Sandpiper | Calidris pusilla | Near-threatened |
| Western Sandpiper | Calidris mauri | Rare/Accidental |
| Short-billed Dowitcher | Limnodromus griseus | Vulnerable |
| Long-billed Dowitcher | Limnodromus scolopaceus | Near-threatened |
| American Woodcock | Scolopax minor | |
| Wilson's Snipe | Gallinago delicata | |
| Spotted Sandpiper | Actitis macularius | |
| Solitary Sandpiper | Tringa solitaria | |
| Willet | Tringa semipalmata | |
| Lesser Yellowlegs | Tringa flavipes | Vulnerable |
| Greater Yellowlegs | Tringa melanoleuca | Near-threatened |
| Wilson's Phalarope | Steganopus tricolor | |
| Red-necked Phalarope | Phalaropus lobatus | Rare/Accidental |
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| Bonaparte's Gull | Chroicocephalus philadelphia | |
| Laughing Gull | Leucophaeus atricilla | Rare/Accidental |
| Franklin's Gull | Leucophaeus pipixcan | |
| Ring-billed Gull | Larus delawarensis | |
| American Herring Gull | Larus smithsonianus | |
| Least Tern | Sternula antillarum | |
| Caspian Tern | Hydroprogne caspia | |
| Black Tern | Chlidonias niger | |
| Forster's Tern | Sterna forsteri | |
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| Turkey Vulture | Cathartes aura | |
| Black Vulture | Coragyps atratus | |
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| Osprey | Pandion haliaetus | |
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| Golden Eagle | Aquila chrysaetos | Rare/Accidental |
| Hen Harrier | Circus cyaneus | |
| Sharp-shinned Hawk | Accipiter striatus | |
| Cooper's Hawk | Accipiter cooperii | |
| Northern Goshawk | Accipiter gentilis | |
| Bald Eagle | Haliaeetus leucocephalus | |
| Mississippi Kite | Ictinia mississippiensis | |
| Red-shouldered Hawk | Buteo lineatus | |
| Broad-winged Hawk | Buteo platypterus | |
| Swainson's Hawk | Buteo swainsoni | |
| Red-tailed Hawk | Buteo jamaicensis | |
| Rough-legged Buzzard | Buteo lagopus | |
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| Common Barn Owl | Tyto alba | |
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| Northern Saw-whet Owl | Aegolius acadicus | Rare/Accidental |
| Northern Long-eared Owl | Asio otus | |
| Short-eared Owl | Asio flammeus | |
| Eastern Screech Owl | Megascops asio | |
| Barred Owl | Strix varia | |
| Great Horned Owl | Bubo virginianus | |
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| Pileated Woodpecker | Dryocopus pileatus | |
| Northern Flicker | Colaptes auratus | |
| Yellow-bellied Sapsucker | Sphyrapicus varius | |
| Red-headed Woodpecker | Melanerpes erythrocephalus | |
| Red-bellied Woodpecker | Melanerpes carolinus | |
| Downy Woodpecker | Picoides pubescens | |
| Hairy Woodpecker | Picoides villosus | |
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| Belted Kingfisher | Megaceryle alcyon | |
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| American Kestrel | Falco sparverius | |
| Merlin | Falco columbarius | Rare/Accidental |
| Prairie Falcon | Falco mexicanus | Rare/Accidental |
| Peregrine Falcon | Falco peregrinus | |
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| Western Kingbird | Tyrannus verticalis | |
| Eastern Kingbird | Tyrannus tyrannus | |
| Scissor-tailed Flycatcher | Tyrannus forficatus | |
| Great Crested Flycatcher | Myiarchus crinitus | |
| Eastern Phoebe | Sayornis phoebe | |
| Say's Phoebe | Sayornis saya | Rare/Accidental |
| Yellow-bellied Flycatcher | Empidonax flaviventris | |
| Acadian Flycatcher | Empidonax virescens | |
| Alder Flycatcher | Empidonax alnorum | |
| Willow Flycatcher | Empidonax traillii | |
| Least Flycatcher | Empidonax minimus | |
| Olive-sided Flycatcher | Contopus cooperi | Near-threatened |
| Eastern Wood Pewee | Contopus virens | |
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| White-eyed Vireo | Vireo griseus | |
| Bell's Vireo | Vireo bellii | |
| Yellow-throated Vireo | Vireo flavifrons | |
| Blue-headed Vireo | Vireo solitarius | |
| Warbling Vireo | Vireo gilvus | |
| Philadelphia Vireo | Vireo philadelphicus | |
| Red-eyed Vireo | Vireo olivaceus | |
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| Loggerhead Shrike | Lanius ludovicianus | Near-threatened |
| Northern Shrike | Lanius borealis | Rare/Accidental |
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| Fish Crow | Corvus ossifragus | |
| American Crow | Corvus brachyrhynchos | |
| Blue Jay | Cyanocitta cristata | |
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| House Sparrow | Passer domesticus | Introduced species |
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| American Pipit | Anthus rubescens | |
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| House Finch | Haemorhous mexicanus | |
| Purple Finch | Haemorhous purpureus | |
| Pine Siskin | Spinus pinus | |
| American Goldfinch | Spinus tristis | |
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| Lapland Longspur | Calcarius lapponicus | |
| Smith's Longspur | Calcarius pictus | |
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| Chipping Sparrow | Spizella passerina | |
| Clay-colored Sparrow | Spizella pallida | |
| Field Sparrow | Spizella pusilla | |
| Lark Sparrow | Chondestes grammacus | |
| Grasshopper Sparrow | Ammodramus savannarum | |
| Spotted Towhee | Pipilo maculatus | |
| Eastern Towhee | Pipilo erythrophthalmus | |
| Dark-eyed Junco | Junco hyemalis | |
| Harris's Sparrow | Zonotrichia querula | Near-threatened |
| White-throated Sparrow | Zonotrichia albicollis | |
| White-crowned Sparrow | Zonotrichia leucophrys | |
| Fox Sparrow | Passerella iliaca | |
| American Tree Sparrow | Passerella arborea | |
| Le Conte's Sparrow | Ammospiza leconteii | |
| Nelson's Sparrow | Ammospiza nelsoni | Rare/Accidental |
| Vesper Sparrow | Pooecetes gramineus | |
| Savannah Sparrow | Passerculus sandwichensis | |
| Henslow's Sparrow | Centronyx henslowii | |
| Song Sparrow | Melospiza melodia | |
| Lincoln's Sparrow | Melospiza lincolnii | |
| Swamp Sparrow | Melospiza georgiana | |
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| Ovenbird | Seiurus aurocapilla | |
| Louisiana Waterthrush | Parkesia motacilla | |
| Northern Waterthrush | Parkesia noveboracensis | |
| Golden-winged Warbler | Vermivora chrysoptera | Near-threatened |
| Blue-winged Warbler | Vermivora cyanoptera | |
| Black-and-white Warbler | Mniotilta varia | |
| Prothonotary Warbler | Protonotaria citrea | |
| Tennessee Warbler | Leiothlypis peregrina | |
| Orange-crowned Warbler | Leiothlypis celata | |
| Nashville Warbler | Leiothlypis ruficapilla | |
| Mourning Warbler | Geothlypis philadelphia | |
| Kentucky Warbler | Geothlypis formosa | |
| Common Yellowthroat | Geothlypis trichas | |
| American Redstart | Setophaga ruticilla | |
| Cerulean Warbler | Setophaga cerulea | Near-threatened |
| Northern Parula | Setophaga americana | |
| Yellow Warbler | Setophaga petechia | |
| Chestnut-sided Warbler | Setophaga pensylvanica | |
| Blackpoll Warbler | Setophaga striata | Near-threatened |
| Palm Warbler | Setophaga palmarum | |
| Pine Warbler | Setophaga pinus | |
| Yellow-rumped Warbler | Setophaga coronata | |
| Yellow-throated Warbler | Setophaga dominica | |
| Prairie Warbler | Setophaga discolor | |
| Black-throated Green Warbler | Setophaga virens | |
| Canada Warbler | Cardellina canadensis | |
| Wilson's Warbler | Cardellina pusilla | |
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| Yellow-breasted Chat | Icteria virens | |
| Yellow-headed Blackbird | Xanthocephalus xanthocephalus | |
| Bobolink | Dolichonyx oryzivorus | |
| Eastern Meadowlark | Sturnella magna | Near-threatened |
| Western Meadowlark | Sturnella neglecta | |
| Baltimore Oriole | Icterus galbula | |
| Orchard Oriole | Icterus spurius | |
| Red-winged Blackbird | Agelaius phoeniceus | |
| Brown-headed Cowbird | Molothrus ater | |
| Rusty Blackbird | Euphagus carolinus | Vulnerable |
| Brewer's Blackbird | Euphagus cyanocephalus | |
| Common Grackle | Quiscalus quiscula | Near-threatened |
| Great-tailed Grackle | Quiscalus mexicanus | |
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| Rose-breasted Grosbeak | Pheucticus ludovicianus | |
| Dickcissel | Spiza americana | |
| Indigo Bunting | Passerina cyanea | |
| Blue Grosbeak | Passerina caerulea | |
| Scarlet Tanager | Piranga olivacea | |
| Summer Tanager | Piranga rubra | |
| Northern Cardinal | Cardinalis cardinalis | |
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| Tufted Titmouse | Baeolophus bicolor | |
| Carolina Chickadee | Poecile carolinensis | |
| Black-capped Chickadee | Poecile atricapillus | |
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| Horned Lark | Eremophila alpestris | |
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| Cliff Swallow | Petrochelidon pyrrhonota | |
| Barn Swallow | Hirundo rustica | |
| Sand Martin | Riparia riparia | |
| Tree Swallow | Tachycineta bicolor | |
| Purple Martin | Progne subis | |
| Northern Rough-winged Swallow | Stelgidopteryx serripennis | |
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| Ruby-crowned Kinglet | Regulus calendula | |
| Golden-crowned Kinglet | Regulus satrapa | |
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| Cedar Waxwing | Bombycilla cedrorum | |
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| American Treecreeper | Certhia americana | |
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| Red-breasted Nuthatch | Sitta canadensis | |
| White-breasted Nuthatch | Sitta carolinensis | |
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| Winter Wren | Troglodytes hiemalis | |
| House Wren | Troglodytes aedon | |
| Sedge Wren | Cistothorus platensis | |
| Marsh Wren | Cistothorus palustris | |
| Carolina Wren | Thryothorus ludovicianus | |
| Bewick's Wren | Thryomanes bewickii | |
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| Blue-gray Gnatcatcher | Polioptila caerulea | |
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| Gray Catbird | Dumetella carolinensis | |
| Northern Mockingbird | Mimus polyglottos | |
| Brown Thrasher | Toxostoma rufum | |
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| Common Starling | Sturnus vulgaris | Introduced species |
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| Eastern Bluebird | Sialia sialis | |
| Wood Thrush | Hylocichla mustelina | |
| Swainson's Thrush | Catharus ustulatus | |
| Gray-cheeked Thrush | Catharus minimus | |
| Hermit Thrush | Catharus guttatus | |
| American Robin | Turdus migratorius | |
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