BirdAnalyst
BBS Route · Missouri · BCR 22

Warren Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 85 species recorded across 14 survey years, no longer active.

85Species 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 →
14Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1967–1984Span
3Observers

Bird Species Found on Missouri Warren

Top 40 of 85 species by most recent count. Each links to its species trend.

Species recorded on the Warren 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 BlackbirdIcteridae2161984+63%1971
House SparrowPasseridae601984+7%1971
Northern BobwhiteOdontophoridae481984+25%1971
Horned LarkAlaudidae461984+29%1971
DickcisselCardinalidae461984-60%1971
Mourning DoveColumbidae411984-23%1971
American RobinTurdidae401984+14%1971
Brown-headed CowbirdIcteridae391983-2%1971
Eastern MeadowlarkIcteridae371984-33%1971
Indigo BuntingCardinalidae341984+2%1971
Northern CardinalCardinalidae291984-26%1971
Barn SwallowHirundinidae241984+24%1971
Northern Rough-winged SwallowHirundinidae221984+35%1980
Blue JayCorvidae161984-38%1971
Red-headed WoodpeckerPicidae151983+66%1971
Red-bellied WoodpeckerPicidae141984+0%1971
Wild TurkeyPhasianidae131980n/an/a
American CrowCorvidae121984+9%1971
Turkey VultureCathartidae101984+8%1971
Field SparrowPasserellidae91984-77%1971
Eastern BluebirdTurdidae91984-33%1971
Common GrackleIcteridae61984-75%1971
Rose-breasted GrosbeakCardinalidae61982+50%1975
Brown ThrasherMimidae61984-17%1971
Vesper SparrowPasserellidae61982+500%1979
Yellow-billed CuckooCuculidae51984-11%1971
Eastern KingbirdTyrannidae51984-50%1971
Grasshopper SparrowPasserellidae51979-46%1971
Orchard OrioleIcteridae41972+0%1967
Yellow-breasted ChatIcteriidae41981+0%1971
Carolina WrenTroglodytidae41981-25%1972
Red-shouldered HawkAccipitridae41976n/an/a
BobolinkIcteridae41979n/an/a
Great Crested FlycatcherTyrannidae31983-53%1971
Eastern Wood-PeweeTyrannidae31982+57%1971
European StarlingSturnidae31984-88%1971
Baltimore OrioleIcteridae31984+0%1971
American GoldfinchFringillidae31983-70%1971
Common YellowthroatParulidae31982-60%1971
Rock PigeonColumbidae31982-41%1972

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