BirdAnalyst
BBS Route · Indiana · BCR 22

Thorntown Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 96 species recorded across 42 survey years, still active.

96Species 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 →
42Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1982–2024Span
3Observers

Bird Species Found on Indiana Thorntown

Top 40 of 96 species by most recent count. Each links to its species trend.

Species recorded on the Thorntown 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 BlackbirdIcteridae1592024-4%1984
European StarlingSturnidae1572024-11%1984
American RobinTurdidae902024-18%1984
House SparrowPasseridae522024-76%1984
Song SparrowPasserellidae422024-17%1984
Northern CardinalCardinalidae392024+4%1984
Brown-headed CowbirdIcteridae382024+59%1984
Mourning DoveColumbidae342024-6%1984
American CrowCorvidae292024-32%1984
Northern House WrenTroglodytidae282024+8%1984
Chipping SparrowPasserellidae222024+288%1984
Horned LarkAlaudidae212024+4%1984
Indigo BuntingCardinalidae212024-67%1984
Common GrackleIcteridae192024-89%1984
Field SparrowPasserellidae192024-33%1984
Eastern MeadowlarkIcteridae162024-32%1984
Red-bellied WoodpeckerPicidae152024+88%1985
KilldeerCharadriidae142024+58%1984
American GoldfinchFringillidae142024-46%1984
Barn SwallowHirundinidae142024-26%1984
DickcisselCardinalidae122024+67%1990
Eastern KingbirdTyrannidae102024+93%1984
Common YellowthroatParulidae102024-69%1984
Gray CatbirdMimidae102024-35%1984
Cedar WaxwingBombycillidae92024+300%1990
House FinchFringillidae92024+186%1990
Cliff SwallowHirundinidae92022+240%2012
Eastern Wood-PeweeTyrannidae82024+47%1984
Blue JayCorvidae82024-7%1984
Chimney SwiftApodidae72024-25%1984
Warbling VireoVireonidae72024-15%1984
Purple MartinHirundinidae62024+138%1984
Tufted TitmouseParidae52024-28%1984
Eastern BluebirdTurdidae52024+200%1989
Great Blue HeronArdeidae52024+275%1991
Carolina WrenTroglodytidae52023+267%1990
Downy WoodpeckerPicidae42024+50%1984
Brown ThrasherMimidae42024-73%1984
Grasshopper SparrowPasserellidae42022+50%1985
Green HeronArdeidae32022+67%1987

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