BirdAnalyst
BBS Route · Illinois · BCR 24

Bremen Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 116 species recorded across 55 survey years, still active.

116Species 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 →
1969–2025Span
9Observers

Bird Species Found on Illinois Bremen

Top 40 of 116 species by most recent count. Each links to its species trend.

Species recorded on the Bremen 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
Indigo BuntingCardinalidae622025+97%1971
Northern CardinalCardinalidae582025+57%1971
Mourning DoveColumbidae472025+5%1971
American CrowCorvidae452025+52%1971
Tufted TitmouseParidae432025+242%1971
Barn SwallowHirundinidae382025+30%1971
Red-bellied WoodpeckerPicidae372025+26%1971
Canada GooseAnatidae322025+150%2017
European StarlingSturnidae312025-77%1971
Chipping SparrowPasserellidae312025+277%1972
Blue-gray GnatcatcherPolioptilidae30202519×1971
Common YellowthroatParulidae292025+270%1971
American RobinTurdidae272025+25%1971
Red-winged BlackbirdIcteridae242025-35%1971
White-eyed VireoVireonidae242025+656%1972
Purple MartinHirundinidae212025-10%1971
Carolina WrenTroglodytidae202025+144%1971
Eastern BluebirdTurdidae202025+74%1971
Eastern Wood-PeweeTyrannidae192025+253%1971
Field SparrowPasserellidae192025-11%1971
House SparrowPasseridae192025-88%1971
Great Crested FlycatcherTyrannidae182025+314%1971
Blue GrosbeakCardinalidae182025+120%1972
American GoldfinchFringillidae172025+300%1971
Turkey VultureCathartidae17202516×1990
Northern ParulaParulidae162025+875%1989
Carolina ChickadeeParidae162025+640%1971
Summer TanagerCardinalidae132025+417%1973
White-breasted NuthatchSittidae132025+617%1972
Acadian FlycatcherTyrannidae122025+633%1971
Brown-headed CowbirdIcteridae122025+27%1971
Northern BobwhiteOdontophoridae112025-78%1971
Yellow-breasted ChatIcteriidae112025+36%1971
Downy WoodpeckerPicidae102025+214%1972
Chimney SwiftApodidae102025-84%1971
Northern MockingbirdMimidae92025-69%1971
Eastern KingbirdTyrannidae72025+178%1972
Eastern MeadowlarkIcteridae72025-61%1971
Eastern TowheePasserellidae72025+4%1971
Wood ThrushTurdidae72025+44%1972

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