BirdAnalyst
BBS Route · Iowa · BCR 22

Sioux City Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 108 species recorded across 54 survey years, still active.

108Species RecordedSpecies recordedDistinct species detected on standard-protocol BBS runs here across all years on record — a measure of survey breadth, not a complete checklist.Full methodology →
54Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1968–2024Span
2Observers

Bird Species Found on Iowa Sioux City

Top 40 of 108 species by most recent count. Each links to its species trend.

Species recorded on the Sioux City route.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →History
American RobinTurdidae942024+51%1970
Common GrackleIcteridae682024-35%1970
Red-winged BlackbirdIcteridae562024-5%1970
House SparrowPasseridae492024-63%1970
European StarlingSturnidae342024-57%1970
Brown-headed CowbirdIcteridae332024+112%1970
Ring-necked PheasantPhasianidae282024+0%1970
Canada GooseAnatidae262024+550%1993
Cliff SwallowHirundinidae252022+250%2004
Mourning DoveColumbidae232024-54%1970
House FinchFringillidae222024-15%1995
Northern CardinalCardinalidae172024+225%1971
Northern House WrenTroglodytidae142024-20%1970
Eurasian Collared-DoveColumbidae142024+258%2015
Chipping SparrowPasserellidae132024-4%1970
Blue-winged TealAnatidae132024+23%1973
DickcisselCardinalidae102024-84%1970
Barn SwallowHirundinidae102024-32%1970
KilldeerCharadriidae92024+78%1970
Eastern KingbirdTyrannidae92024-62%1970
Yellow WarblerParulidae92024+225%1971
Chimney SwiftApodidae82024-40%1970
American CrowCorvidae72024-32%1970
Common YellowthroatParulidae72024-71%1970
Lark BuntingPasserellidae71970n/an/a
Red-headed WoodpeckerPicidae52024-79%1970
Common NighthawkCaprimulgidae52021-8%1970
Blue JayCorvidae52024-76%1970
Orchard OrioleIcteridae52024+260%1970
Warbling VireoVireonidae52024+133%1971
MallardAnatidae52024+36%1973
Gray CatbirdMimidae52024+60%1976
Northern ShovelerAnatidae52023+200%1988
Western KingbirdTyrannidae42023-60%1970
BobolinkIcteridae41982+86%1975
Hooded MerganserAnatidae42006+100%2003
Northern BobwhiteOdontophoridae32024-54%1971
Rock PigeonColumbidae32023+11%1970
Horned LarkAlaudidae32023-63%1970
American GoldfinchFringillidae32024-20%1970

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.