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BBS Route · Kentucky · BCR 24

Iron Bridge Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 88 species recorded across 14 survey years, no longer active.

88Species 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 →
1966–1998Span
3Observers

Bird Species Found on Kentucky Iron Bridge

Top 40 of 88 species by most recent count. Each links to its species trend.

Species recorded on the Iron Bridge 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 StarlingSturnidae1721998+261%1968
Common GrackleIcteridae871998-26%1968
American CrowCorvidae381998+67%1968
Barn SwallowHirundinidae351998+15%1968
Rock PigeonColumbidae311988+200%1968
Red-winged BlackbirdIcteridae301998+267%1968
Eastern MeadowlarkIcteridae281998-28%1968
Indigo BuntingCardinalidae241998-8%1968
Field SparrowPasserellidae231998+12%1968
House SparrowPasseridae231998+41%1968
Northern MockingbirdMimidae231998-17%1968
Eastern BluebirdTurdidae221998+151%1968
American RobinTurdidae201998+144%1968
Mourning DoveColumbidae191998+5%1968
Northern CardinalCardinalidae191998-12%1968
Brown-headed CowbirdIcteridae181998+39%1968
Chipping SparrowPasserellidae181998+107%1968
Chimney SwiftApodidae161998-8%1968
Western Cattle-EgretArdeidae15199815×1967
Turkey VultureCathartidae151998+75%1981
Blue GrosbeakCardinalidae141998+550%1968
Eastern KingbirdTyrannidae131998+146%1968
American GoldfinchFringillidae131998+119%1968
Orchard OrioleIcteridae111998-19%1968
Northern BobwhiteOdontophoridae101998-5%1968
Eastern Wood-PeweeTyrannidae91998+24%1968
Common YellowthroatParulidae91998+167%1968
Tufted TitmouseParidae91998+38%1968
KilldeerCharadriidae71998+133%1968
Blue JayCorvidae71998+114%1968
House FinchFringillidae71998n/an/a
Carolina WrenTroglodytidae61998-4%1968
Red-bellied WoodpeckerPicidae51998+9%1968
Eastern PhoebeTyrannidae51986+400%1978
Green HeronArdeidae41988+75%1968
Yellow-billed CuckooCuculidae41998-62%1968
DickcisselCardinalidae41998+19%1968
Brown ThrasherMimidae41998-22%1968
Carolina ChickadeeParidae41998+217%1978
Blue-gray GnatcatcherPolioptilidae41998+33%1978

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