BirdAnalyst
BBS Route · Iowa · BCR 22

Sioux City Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 108 species recorded across 55 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 →
55Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1968–2025Span
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 RobinTurdidae1052025+55%1970
Red-winged BlackbirdIcteridae712025-11%1970
European StarlingSturnidae652025-38%1970
Common GrackleIcteridae392025-43%1970
Barn SwallowHirundinidae352025-11%1970
Brown-headed CowbirdIcteridae322025+62%1970
House SparrowPasseridae302025-65%1970
Mourning DoveColumbidae262025-64%1970
Cliff SwallowHirundinidae252022+250%2004
Canada GooseAnatidae212025+640%1993
Chimney SwiftApodidae192025+17%1970
Rock PigeonColumbidae152025+50%1970
Northern House WrenTroglodytidae152025-30%1970
Ring-necked PheasantPhasianidae142025-5%1970
Blue-winged TealAnatidae132024+23%1973
House FinchFringillidae122025-12%1995
KilldeerCharadriidae102025+26%1970
DickcisselCardinalidae102025-91%1970
American GoldfinchFringillidae92025+7%1970
Eurasian Collared-DoveColumbidae82025+242%2015
American CrowCorvidae72024-32%1970
Baltimore OrioleIcteridae72025-48%1970
Warbling VireoVireonidae72025+167%1971
Lark BuntingPasserellidae71970n/an/a
Eastern KingbirdTyrannidae62025-52%1970
Chipping SparrowPasserellidae62025+0%1970
Northern CardinalCardinalidae62025+175%1971
Common YellowthroatParulidae62025-75%1970
Western MeadowlarkIcteridae52025-97%1970
Orchard OrioleIcteridae52024+260%1970
Northern ShovelerAnatidae52023+200%1988
Western KingbirdTyrannidae42023-60%1970
Horned LarkAlaudidae42025-63%1970
Hooded MerganserAnatidae42006+100%2003
Northern BobwhiteOdontophoridae32024-54%1971
Red-headed WoodpeckerPicidae32025-83%1970
Common NighthawkCaprimulgidae32025-17%1970
Indigo BuntingCardinalidae32024+17%1970
Purple MartinHirundinidae32025-78%1970
Black TernLaridae32024+860%1975

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14. A route is a sample, not a census.