BirdAnalyst
BBS Route · Iowa · BCR 22

Cedar Valley Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 88 species recorded across 29 survey years, no longer active.

88Species 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 →
29Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1967–1997Span
2Observers

Bird Species Found on Iowa Cedar Valley

Top 40 of 88 species by most recent count. Each links to its species trend.

Species recorded on the Cedar Valley 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 BlackbirdIcteridae3611997-19%1969
House SparrowPasseridae2641997-38%1969
American RobinTurdidae781997+59%1969
European StarlingSturnidae751997+45%1969
Common GrackleIcteridae741997-19%1969
KilldeerCharadriidae681997+669%1970
Western MeadowlarkIcteridae521997-59%1969
Song SparrowPasserellidae511997+129%1969
Barn SwallowHirundinidae511997+228%1969
Horned LarkAlaudidae471997-48%1969
Brown-headed CowbirdIcteridae461997+154%1969
Vesper SparrowPasserellidae461997+692%1969
DickcisselCardinalidae351997-76%1969
Mourning DoveColumbidae301997+58%1969
American CrowCorvidae231997+39%1969
Chipping SparrowPasserellidae22199716×1974
Eastern MeadowlarkIcteridae201997+100%1969
Ring-necked PheasantPhasianidae191997-19%1969
Common YellowthroatParulidae181997+5%1969
Chimney SwiftApodidae151997-9%1969
Northern BobwhiteOdontophoridae141997-23%1969
Indigo BuntingCardinalidae121997+30%1969
Northern CardinalCardinalidae111997+65%1969
Bank SwallowHirundinidae101997+120%1973
Rock PigeonColumbidae91997-69%1969
Savannah SparrowPasserellidae81997+223%1974
Blue JayCorvidae61997+100%1971
American GoldfinchFringillidae61997+7%1969
Tree SwallowHirundinidae61996n/an/a
Brown ThrasherMimidae51997+50%1969
Tufted TitmouseParidae51996+100%1970
Common NighthawkCaprimulgidae51971n/an/a
Baltimore OrioleIcteridae41997+71%1969
Grasshopper SparrowPasserellidae41997-36%1969
Northern House WrenTroglodytidae41997+11%1969
Northern Rough-winged SwallowHirundinidae41997+60%1977
Gray PartridgePhasianidae41991+300%1987
House FinchFringillidae41997-60%1995
Upland SandpiperScolopacidae31997+0%1972
Gray CatbirdMimidae31997+250%1972

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