BirdAnalyst
BBS Route · Indiana · BCR 23

Knox Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 106 species recorded across 28 survey years, still active.

106Species 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 →
28Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1981–2025Span
9Observers

Bird Species Found on Indiana Knox

Top 40 of 106 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
European StarlingSturnidae782025-60%1984
House SparrowPasseridae582025-72%1984
Common GrackleIcteridae472025-70%1984
Barn SwallowHirundinidae472025-15%1984
American CrowCorvidae432025+19%1984
Red-winged BlackbirdIcteridae432025-52%1984
American RobinTurdidae292025-30%1984
Brown-headed CowbirdIcteridae252025+87%1984
Song SparrowPasserellidae232025+29%1984
Mourning DoveColumbidae222025-6%1984
KilldeerCharadriidae202025+85%1984
Northern CardinalCardinalidae202025+184%1984
Indigo BuntingCardinalidae192025-8%1984
House FinchFringillidae192025+68%1991
MallardAnatidae182019+38%1989
Chipping SparrowPasserellidae182025-29%1984
Turkey VultureCathartidae172025+480%1985
Eastern KingbirdTyrannidae172025+386%1984
Field SparrowPasserellidae162025-47%1984
Blue JayCorvidae152025+58%1984
American GoldfinchFringillidae152025-38%1984
Northern House WrenTroglodytidae142025+194%1984
Common YellowthroatParulidae132025+144%1984
Rock PigeonColumbidae122025-10%1984
Tufted TitmouseParidae122025+8%1984
Canada GooseAnatidae122025+183%1990
Eastern Wood-PeweeTyrannidae102025+210%1984
Gray CatbirdMimidae102025+180%1984
Wild TurkeyPhasianidae102025+150%2008
Eastern BluebirdTurdidae92025+113%1984
Cedar WaxwingBombycillidae92025+167%1989
Yellow WarblerParulidae92025+160%1992
Tree SwallowHirundinidae9202515×1991
Baltimore OrioleIcteridae82025-58%1984
Rose-breasted GrosbeakCardinalidae82025+83%1985
Northern BobwhiteOdontophoridae72025-6%1985
Eastern MeadowlarkIcteridae72025-81%1984
Warbling VireoVireonidae72025+110%1984
White-breasted NuthatchSittidae72025+271%1985
Northern MockingbirdMimidae72025+350%1993

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