BirdAnalyst
BBS Route · Iowa · BCR 22

Red Rock Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 101 species recorded across 43 survey years, still active.

101Species 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 →
43Years 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 Red Rock

Top 40 of 101 species by most recent count. Each links to its species trend.

Species recorded on the Red Rock 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
European StarlingSturnidae3382024+982%1970
Red-winged BlackbirdIcteridae1752024+39%1970
American RobinTurdidae1462024+403%1970
House SparrowPasseridae1122024-37%1970
Northern CardinalCardinalidae692024+150%1970
DickcisselCardinalidae632024+31%1970
Indigo BuntingCardinalidae502024+207%1970
Mourning DoveColumbidae452024+10%1970
Chipping SparrowPasserellidae43202425×1972
American CrowCorvidae412024+108%1970
Northern House WrenTroglodytidae362024+98%1970
Gray CatbirdMimidae332024+310%1970
Common GrackleIcteridae322024+6%1970
Barn SwallowHirundinidae312024+131%1970
Brown-headed CowbirdIcteridae302024+197%1970
Eurasian Collared-DoveColumbidae272024+327%2006
Eastern MeadowlarkIcteridae262024+307%1970
KilldeerCharadriidae232024+450%1970
Common YellowthroatParulidae232024+4%1970
Turkey VultureCathartidae202024+675%1974
House FinchFringillidae202024+286%1994
Eastern KingbirdTyrannidae172024+185%1970
Blue JayCorvidae172024+34%1970
Cliff SwallowHirundinidae172024+22%1998
Rose-breasted GrosbeakCardinalidae152024+24%1970
American GoldfinchFringillidae132024-58%1970
Red-headed WoodpeckerPicidae122024-51%1970
Cedar WaxwingBombycillidae112024+267%1991
Ring-necked PheasantPhasianidae102024-53%1970
Horned LarkAlaudidae102024+4%1970
Warbling VireoVireonidae102024+257%1980
Brown ThrasherMimidae102024-6%1970
White-breasted NuthatchSittidae92024+320%1972
Canada GooseAnatidae82021-58%1997
Baltimore OrioleIcteridae72024+167%1970
Song SparrowPasserellidae72024+57%1970
Black-capped ChickadeeParidae62024+100%1970
Red-bellied WoodpeckerPicidae52024+71%1979
Eastern BluebirdTurdidae52024-17%1970
Downy WoodpeckerPicidae52024+56%1973

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