BirdAnalyst
BBS Route · Indiana · BCR 23

Knox Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 103 species recorded across 27 survey years, still active.

103Species 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 →
27Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1981–2024Span
8Observers

Bird Species Found on Indiana Knox

Top 40 of 103 species by most recent count. Each links to its species trend.

Species recorded on the Knox 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 BlackbirdIcteridae752024-42%1984
American RobinTurdidae632024-15%1984
American CrowCorvidae502024+23%1984
Northern CardinalCardinalidae502024+253%1984
Song SparrowPasserellidae362024+47%1984
Mourning DoveColumbidae292024+7%1984
Chipping SparrowPasserellidae272024-23%1984
Indigo BuntingCardinalidae222024+9%1984
European StarlingSturnidae212024-56%1984
Blue JayCorvidae202024+68%1984
MallardAnatidae182019+38%1989
Common YellowthroatParulidae162024+183%1984
Field SparrowPasserellidae152024-48%1984
House SparrowPasseridae152024-81%1984
Brown-headed CowbirdIcteridae142024+17%1984
Barn SwallowHirundinidae142024-40%1984
Northern House WrenTroglodytidae142024+171%1984
Canada GooseAnatidae132024+228%1990
Eastern Wood-PeweeTyrannidae122024+170%1984
White-breasted NuthatchSittidae122024+343%1985
Eastern BluebirdTurdidae122024+127%1984
Bank SwallowHirundinidae111985n/an/a
American GoldfinchFringillidae102024-47%1984
Gray CatbirdMimidae102024+233%1984
Eastern KingbirdTyrannidae82024+229%1984
Common GrackleIcteridae82023-74%1984
Tufted TitmouseParidae82024-17%1984
Turkey VultureCathartidae72024+220%1985
Red-headed WoodpeckerPicidae72024-43%1984
House FinchFringillidae72024+5%1991
Northern BobwhiteOdontophoridae62024-33%1985
Red-bellied WoodpeckerPicidae62024+300%1989
Chimney SwiftApodidae62023-55%1984
Eastern TowheePasserellidae62024+250%1984
Black-capped ChickadeeParidae62024+117%1989
Northern MockingbirdMimidae62024+275%1993
Carolina WrenTroglodytidae62024+75%1998
Warbling VireoVireonidae42024+160%1984
Cedar WaxwingBombycillidae42024+117%1989
KilldeerCharadriidae32024+45%1984

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