BirdAnalyst
BBS Route · Indiana · BCR 22

Thorntown Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 96 species recorded across 43 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 →
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 →
1982–2025Span
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
European StarlingSturnidae2592025+28%1984
Red-winged BlackbirdIcteridae852025-12%1984
American RobinTurdidae772025-21%1984
House SparrowPasseridae502025-76%1984
Mourning DoveColumbidae382025-21%1984
Barn SwallowHirundinidae382025+10%1984
Song SparrowPasserellidae322025-20%1984
Common GrackleIcteridae312025-86%1984
KilldeerCharadriidae292025+84%1984
Chipping SparrowPasserellidae292025+347%1984
Northern CardinalCardinalidae282025+12%1984
Brown-headed CowbirdIcteridae232025+42%1984
Indigo BuntingCardinalidae232025-64%1984
Northern House WrenTroglodytidae232025+4%1984
American CrowCorvidae212025-13%1984
American GoldfinchFringillidae172025-28%1984
Purple MartinHirundinidae162025+200%1984
Eastern MeadowlarkIcteridae152025-40%1984
Field SparrowPasserellidae132025-30%1984
Cliff SwallowHirundinidae132025+200%2019
Common YellowthroatParulidae122025-69%1984
DickcisselCardinalidae122025+108%1990
Horned LarkAlaudidae102025+13%1984
Tufted TitmouseParidae92025-36%1984
Gray CatbirdMimidae82025-24%1984
Warbling VireoVireonidae72025-15%1984
Eastern BluebirdTurdidae72025+214%1989
House FinchFringillidae62025+171%1990
Downy WoodpeckerPicidae52025+75%1984
Red-headed WoodpeckerPicidae52025-47%1984
Eastern KingbirdTyrannidae52025+71%1984
Great Crested FlycatcherTyrannidae52025+56%1984
Vesper SparrowPasserellidae52025-89%1984
Northern Rough-winged SwallowHirundinidae52025+63%1984
Canada GooseAnatidae52025+280%1995
Turkey VultureCathartidae52025+633%1998
Northern BobwhiteOdontophoridae42025-36%1984
Blue JayCorvidae42025-20%1984
Red-bellied WoodpeckerPicidae42025+41%1985
Red-tailed HawkAccipitridae42025+233%1990

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14. A route is a sample, not a census.