BirdAnalyst
BBS Route · Iowa · BCR 22

West Liberty Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 94 species recorded across 47 survey years, still active.

94Species 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 →
47Years 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
9Observers

Bird Species Found on Iowa West Liberty

Top 40 of 94 species by most recent count. Each links to its species trend.

Species recorded on the West Liberty 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
Red-winged BlackbirdIcteridae2532024-13%1970
American RobinTurdidae1172024+299%1970
Cliff SwallowHirundinidae692024+249%1987
DickcisselCardinalidae552024+9%1970
House SparrowPasseridae462024-53%1970
Barn SwallowHirundinidae372024+48%1970
European StarlingSturnidae362024-40%1970
Mourning DoveColumbidae292024+174%1970
Northern CardinalCardinalidae292024+205%1970
Common YellowthroatParulidae292024+85%1970
Eurasian Collared-DoveColumbidae282024+940%2015
KilldeerCharadriidae22202419×1972
Northern Rough-winged SwallowHirundinidae222023+300%1981
Purple MartinHirundinidae202024+488%1971
Eurasian Tree SparrowPasseridae18202419×2013
Eastern MeadowlarkIcteridae172024+2%1970
Song SparrowPasserellidae172024+31%1970
Northern House WrenTroglodytidae172024+19%1970
Gray CatbirdMimidae142024+215%1972
Chipping SparrowPasserellidae112024+550%1971
Tree SwallowHirundinidae112007+450%1986
Canada GooseAnatidae102015+100%2010
Brown-headed CowbirdIcteridae92024+78%1970
Rock PigeonColumbidae72024-82%1970
Common GrackleIcteridae72024-89%1970
Indigo BuntingCardinalidae72024+133%1970
Ring-necked PheasantPhasianidae62024-66%1970
Chimney SwiftApodidae62023-75%1970
Vesper SparrowPasserellidae62019+63%1970
Warbling VireoVireonidae62024+67%1970
Blue JayCorvidae52024+6%1970
American CrowCorvidae52024-69%1970
American GoldfinchFringillidae52024+7%1970
Upland SandpiperScolopacidae52024+150%1976
American KestrelFalconidae52024+57%1994
Orchard OrioleIcteridae42024+50%1991
Rose-breasted GrosbeakCardinalidae42024+175%1972
American RedstartParulidae42024+0%1975
Horned LarkAlaudidae32024-44%1970
Western MeadowlarkIcteridae32024-86%1970

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