BirdAnalyst
BBS Route · Illinois · BCR 24

Sandusky Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 107 species recorded across 29 survey years, still active.

107Species 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 →
29Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1993–2023Span
2Observers

Bird Species Found on Illinois Sandusky

Top 40 of 107 species by most recent count. Each links to its species trend.

Species recorded on the Sandusky 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
White-eyed VireoVireonidae672023+170%1995
Indigo BuntingCardinalidae582023-23%1995
American CrowCorvidae572023+90%1995
Northern CardinalCardinalidae442023-6%1995
Common YellowthroatParulidae402023+44%1995
Brown-headed CowbirdIcteridae292023-56%1995
Mourning DoveColumbidae242023+41%1995
Red-eyed VireoVireonidae242023+224%1995
Carolina WrenTroglodytidae232023-27%1995
Acadian FlycatcherTyrannidae222023+90%1995
Yellow-breasted ChatIcteriidae212023-4%1995
Tufted TitmouseParidae212023+9%1995
Field SparrowPasserellidae182023+16%1995
Turkey VultureCathartidae182023+300%1998
Cliff SwallowHirundinidae182022+900%2011
Barn SwallowHirundinidae172023+66%1995
Red-bellied WoodpeckerPicidae162023+11%1995
Wood ThrushTurdidae162023+119%1995
Common GrackleIcteridae152022-71%1995
American GoldfinchFringillidae152023-20%1995
Chipping SparrowPasserellidae152023+16%1995
Northern ParulaParulidae152023+52%1995
Summer TanagerCardinalidae142023+188%1995
Western Cattle-EgretArdeidae142009-5%2002
Eastern Wood-PeweeTyrannidae132023+70%1995
Kentucky WarblerParulidae132023+83%1995
House SparrowPasseridae122023+37%1995
White-breasted NuthatchSittidae122023+112%1995
Blue GrosbeakCardinalidae112023+344%1995
Northern Rough-winged SwallowHirundinidae112023+75%1995
Eastern BluebirdTurdidae112023+6%1995
Blue JayCorvidae92023-37%1995
Red-winged BlackbirdIcteridae92023-42%1995
Great Crested FlycatcherTyrannidae82023-35%1995
Purple MartinHirundinidae82023+433%1995
Blue-gray GnatcatcherPolioptilidae72023-51%1995
Double-crested CormorantPhalacrocoracidae72016n/an/a
Yellow-billed CuckooCuculidae62023-25%1995
DickcisselCardinalidae62023+57%1995
Yellow-throated VireoVireonidae62023+27%1995

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