BirdAnalyst
BBS Route · Illinois · BCR 22

Bradbury Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 104 species recorded across 55 survey years, still active.

104Species 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 →
55Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1970–2025Span
6Observers

Bird Species Found on Illinois Bradbury

Top 40 of 104 species by most recent count. Each links to its species trend.

Species recorded on the Bradbury 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 BlackbirdIcteridae1962025-58%1972
House SparrowPasseridae872025-85%1972
Mourning DoveColumbidae602025-35%1972
American RobinTurdidae542025+16%1972
Common YellowthroatParulidae482025+57%1972
European StarlingSturnidae462025-52%1972
DickcisselCardinalidae462025-8%1972
Song SparrowPasserellidae402025-43%1972
Common GrackleIcteridae372025-90%1972
Horned LarkAlaudidae322025+111%1972
American CrowCorvidae322025+85%1972
Tufted TitmouseParidae322025+378%1973
Northern CardinalCardinalidae292025+12%1972
Indigo BuntingCardinalidae282025-58%1972
Purple MartinHirundinidae282025+294%1973
KilldeerCharadriidae242025+558%1974
Barn SwallowHirundinidae222025-29%1972
Chipping SparrowPasserellidae172025+95%1973
Eastern BluebirdTurdidae172025+14%1972
Brown-headed CowbirdIcteridae162025+36%1972
Canada GooseAnatidae162024+75%1996
Red-bellied WoodpeckerPicidae152025+113%1973
Eastern Wood-PeweeTyrannidae152025+218%1972
Eastern MeadowlarkIcteridae152025-84%1972
Great Crested FlycatcherTyrannidae152025+386%1974
Northern BobwhiteOdontophoridae142025-59%1972
Field SparrowPasserellidae132025+207%1972
Northern House WrenTroglodytidae122025+150%1972
Warbling VireoVireonidae12202511×1975
Yellow-breasted ChatIcteriidae112025+93%1972
Gray CatbirdMimidae112025+25%1972
Eastern KingbirdTyrannidae102025-5%1972
Blue-gray GnatcatcherPolioptilidae102025+200%1984
Eastern PhoebeTyrannidae92025+110%1973
Carolina WrenTroglodytidae92025+238%1973
Baltimore OrioleIcteridae92025+50%1973
Turkey VultureCathartidae9202515×1989
Red-headed WoodpeckerPicidae82025-20%1972
Chimney SwiftApodidae82025-73%1973
Blue JayCorvidae82025-86%1972

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