Iowa Ornithologists' Union bringing together birders of all skill levels

IOU Big Weekend

1-2 May 2021

Originated by the pandemic, the IOU may periodically offer special counts to see how many species we can record throughout the state in a designated timeframe. Bird by yourself or with a friend. Anyone may participate but entry is limited to IOU members. Login and check off what you've seen. Watch the total grow.

  Total Species Recorded Statewide: 0  

  Total Counties Birded: 0  

Login    IOU members may login and update the lists.

• Adair1
• Adams2
• Allamakee3
• Appanoose4
• Audubon5
• Benton6
• Black Hawk7
• Boone8
• Bremer9
• Buchanan10
• Buena Vista11
• Butler12
• Calhoun13
• Carroll14
• Cass15
• Cedar16
• Cerro Gordo17
• Cherokee18
• Chickasaw19
• Clarke20
• Clay21
• Clayton22
• Clinton23
• Crawford24
• Dallas25
• Davis26
• Decatur27
• Delaware28
• Des Moines29
• Dickinson30
• Dubuque31
• Emmet32
• Fayette33
• Floyd34
• Franklin35
• Fremont36
• Greene37
• Grundy38
• Guthrie39
• Hamilton40
• Hancock41
• Hardin42
• Harrison43
• Henry44
• Howard45
• Humboldt46
• Ida47
• Iowa48
• Jackson49
• Jasper50
• Jefferson51
• Johnson52
• Jones53
• Keokuk54
• Kossuth55
• Lee56
• Linn57
• Louisa58
• Lucas59
• Lyon60
• Madison61
• Mahaska62
• Marion63
• Marshall64
• Mills65
• Mitchell66
• Monona67
• Monroe68
• Montgomery69
• Muscatine70
• O'Brien71
• Osceola72
• Page73
• Palo Alto74
• Plymouth75
• Pocahontas76
• Polk77
• Pottawattamie78
• Poweshiek79
• Ringgold80
• Sac81
• Scott82
• Shelby83
• Sioux84
• Story85
• Tama86
• Taylor87
• Union88
• Van Buren89
• Wapello90
• Warren91
• Washington92
• Wayne93
• Webster94
• Winnebago95
• Winneshiek96
• Woodbury97
• Worth98
• Wright99

Black-bellied Whistling-DuckDunlinLong-eared OwlEvening Grosbeak
Fulvous Whistling-DuckBaird's SandpiperShort-eared OwlPine Grosbeak
Snow GooseLeast SandpiperBoreal OwlGray-crowned Rosy-Finch
Ross's GooseWhite-rumped SandpiperNorthern Saw-whet OwlHouse Finch
Greater White-fronted GooseBuff-breasted SandpiperBelted KingfisherPurple Finch
Taiga Bean-GoosePectoral SandpiperLewis's WoodpeckerCommon Redpoll
BrantSemipalmated SandpiperRed-headed WoodpeckerHoary Redpoll
Cackling GooseWestern SandpiperAcorn WoodpeckerRed Crossbill
Canada GooseShort-billed DowitcherRed-bellied WoodpeckerWhite-winged Crossbill
Mute SwanLong-billed DowitcherYellow-bellied SapsuckerPine Siskin
Trumpeter SwanAmerican WoodcockRed-breasted SapsuckerLesser Goldfinch
Tundra SwanWilson's SnipeBlack-backed WoodpeckerAmerican Goldfinch
Wood DuckSpotted SandpiperDowny WoodpeckerLapland Longspur
GarganeySolitary SandpiperHairy WoodpeckerChestnut-collared Longspur
Blue-winged TealLesser YellowlegsNorthern FlickerSmith's Longspur
Cinnamon TealWilletPileated WoodpeckerSnow Bunting
Northern ShovelerGreater YellowlegsCrested CaracaraGrasshopper Sparrow
GadwallWilson's PhalaropeAmerican KestrelBlack-throated Sparrow
Eurasian WigeonRed-necked PhalaropeMerlinLark Sparrow
American WigeonRed PhalaropeGyrfalconLark Bunting
MallardPomarine JaegerPeregrine FalconChipping Sparrow
American Black DuckParasitic JaegerPrairie FalconClay-colored Sparrow
Mottled DuckLong-tailed JaegerCarolina ParakeetField Sparrow
Northern PintailThick-billed MurreGreat Crested FlycatcherFox Sparrow
Green-winged TealLong-billed MurreletWestern KingbirdAmerican Tree Sparrow
CanvasbackAncient MurreletEastern KingbirdDark-eyed Junco
RedheadBlack-legged KittiwakeScissor-tailed FlycatcherWhite-crowned Sparrow
Ring-necked DuckIvory GullFork-tailed FlycatcherGolden-crowned Sparrow
Greater ScaupSabine's GullOlive-sided FlycatcherHarris's Sparrow
Lesser ScaupBonaparte's GullWestern Wood-PeweeWhite-throated Sparrow
King EiderBlack-headed GullEastern Wood-PeweeVesper Sparrow
Common EiderLittle GullYellow-bellied FlycatcherLeConte's Sparrow
Harlequin DuckRoss's GullAcadian FlycatcherNelson's Sparrow
Surf ScoterLaughing GullAlder FlycatcherBaird's Sparrow
White-winged ScoterFranklin's GullWillow FlycatcherHenslow's Sparrow
Black ScoterBlack-tailed GullLeast FlycatcherSavannah Sparrow
Long-tailed DuckHeermann's Gull"Western" FlycatcherSong Sparrow
BuffleheadMew GullEastern PhoebeLincoln's Sparrow
Common GoldeneyeRing-billed GullSay's PhoebeSwamp Sparrow
Barrow's GoldeneyeCalifornia GullVermilion FlycatcherGreen-tailed Towhee
Hooded MerganserHerring GullLoggerhead ShrikeSpotted Towhee
Common MerganserIceland GullNorthern ShrikeEastern Towhee
Red-breasted MerganserLesser Black-backed GullWhite-eyed VireoYellow-breasted Chat
Ruddy DuckSlaty-backed GullBell's VireoYellow-headed Blackbird
Northern BobwhiteGlaucous-winged GullYellow-throated VireoBobolink
Wild TurkeyGlaucous GullBlue-headed VireoEastern Meadowlark
Ruffed GrouseGreat Black-backed GullPhiladelphia VireoWestern Meadowlark
Sharp-tailed GrouseLeast TernWarbling VireoOrchard Oriole
Greater Prairie-ChickenCaspian TernRed-eyed VireoHooded Oriole
Gray PartridgeBlack TernCanada JayBullock's Oriole
Ring-necked PheasantCommon TernPinyon JayBaltimore Oriole
Pied-billed GrebeArctic TernBlue JayScott's Oriole
Horned GrebeForster's TernClark's NutcrackerRed-winged Blackbird
Red-necked GrebeRoyal TernBlack-billed MagpieBrown-headed Cowbird
Eared GrebeRed-throated LoonAmerican CrowRusty Blackbird
Western GrebePacific LoonFish CrowBrewer's Blackbird
Clark's GrebeCommon LoonCommon RavenCommon Grackle
Rock PigeonYellow-billed LoonHorned LarkGreat-tailed Grackle
Eurasian Collared-DoveWood StorkBank SwallowOvenbird
Passenger PigeonMagnificent FrigatebirdTree SwallowWorm-eating Warbler
Inca DoveBrown BoobyViolet-green SwallowLouisiana Waterthrush
Common Ground DoveAnhingaNorthern Rough-winged SwallowNorthern Waterthrush
White-winged DoveDouble-crested CormorantPurple MartinGolden-winged Warbler
Mourning DoveNeotropic CormorantBarn SwallowBlue-winged Warbler
Groove-billed AniAmerican White PelicanCliff SwallowBlack-and-white Warbler
Yellow-billed CuckooBrown PelicanCave SwallowProthonotary Warbler
Black-billed CuckooAmerican BitternBlack-capped ChickadeeTennessee Warbler
Common NighthawkLeast BitternBoreal ChickadeeOrange-crowned Warbler
Chuck-will's-widowGreat Blue HeronTufted TitmouseNashville Warbler
Eastern Whip-poor-willGreat EgretRed-breasted NuthatchConnecticut Warbler
Chimney SwiftSnowy EgretWhite-breasted NuthatchMacGillivray's Warbler
Mexican VioletearLittle Blue HeronPygmy NuthatchMourning Warbler
Ruby-throated HummingbirdTricolored HeronBrown CreeperKentucky Warbler
Anna's HummingbirdReddish EgretRock WrenCommon Yellowthroat
Rufous HummingbirdCattle EgretHouse WrenHooded Warbler
Broad-billed HummingbirdGreen HeronPacific WrenAmerican Redstart
King RailBlack-crowned Night-HeronWinter WrenCape May Warbler
Virginia RailYellow-crowned Night-HeronSedge WrenCerulean Warbler
SoraWhite IbisMarsh WrenNorthern Parula
Common GallinuleGlossy IbisCarolina WrenMagnolia Warbler
Purple GallinuleWhite-faced IbisBewick's WrenBay-breasted Warbler
American CootRoseate SpoonbillBlue-gray GnatcatcherBlackburnian Warbler
Yellow RailBlack VultureGolden-crowned KingletYellow Warbler
Black RailTurkey VultureRuby-crowned KingletChestnut-sided Warbler
Sandhill CraneOspreyEastern BluebirdBlackpoll Warbler
Whooping CraneWhite-tailed KiteMountain BluebirdBlack-throated Blue Warbler
Black-necked StiltSwallow-tailed KiteTownsend's SolitairePalm Warbler
American AvocetGolden EagleVeeryPine Warbler
Black-bellied PloverNorthern HarrierGray-cheeked ThrushYellow-rumped Warbler
American Golden-PloverSharp-shinned HawkSwainson's ThrushYellow-throated Warbler
KilldeerCooper's HawkHermit ThrushPrairie Warbler
Semipalmated PloverNorthern GoshawkWood ThrushBlack-throated Gray Warbler
Piping PloverBald EagleAmerican RobinTownsend's Warbler
Snowy PloverMississippi KiteVaried ThrushBlack-throated Green Warbler
Upland SandpiperRed-shouldered HawkGray CatbirdCanada Warbler
WhimbrelBroad-winged HawkCurve-billed ThrasherWilson's Warbler
Eskimo CurlewSwainson's HawkBrown ThrasherSummer Tanager
Long-billed CurlewRed-tailed HawkSage ThrasherScarlet Tanager
Bar-tailed GodwitRough-legged HawkNorthern MockingbirdWestern Tanager
Hudsonian GodwitFerruginous HawkEuropean StarlingNorthern Cardinal
Marbled GodwitBarn OwlBohemian WaxwingRose-breasted Grosbeak
Ruddy TurnstoneEastern Screech-OwlCedar WaxwingBlack-headed Grosbeak
Red KnotGreat Horned OwlHouse SparrowBlue Grosbeak
RuffSnowy OwlEurasian Tree SparrowLazuli Bunting
Sharp-tailed SandpiperNorthern Hawk OwlAmerican PipitIndigo Bunting
Stilt SandpiperBurrowing OwlSprague's PipitPainted Bunting
Curlew SandpiperBarred OwlBramblingDickcissel
SanderlingGreat Gray Owl