BirdAnalyst
BBS Route · Illinois · BCR 22

Beaucoup Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 110 species recorded across 51 survey years, still active.

110Species 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 →
51Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1971–2025Span
6Observers

Bird Species Found on Illinois Beaucoup

Top 40 of 110 species by most recent count. Each links to its species trend.

Species recorded on the Beaucoup 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 BlackbirdIcteridae3922025-15%1973
European StarlingSturnidae1902025+431%1973
Common GrackleIcteridae1292025-54%1973
House SparrowPasseridae1002025-66%1973
DickcisselCardinalidae962025+30%1973
American RobinTurdidae572025+96%1973
Cliff SwallowHirundinidae44202527×2004
Mourning DoveColumbidae282025+70%1973
Horned LarkAlaudidae272025+40%1973
Canada GooseAnatidae262025+19%2002
Song SparrowPasserellidae242025-8%1973
American CrowCorvidae232025+429%1973
Barn SwallowHirundinidae222025+10%1973
Double-crested CormorantPhalacrocoracidae222025+25%2003
KilldeerCharadriidae202025+284%1973
Indigo BuntingCardinalidae172025-3%1973
Northern CardinalCardinalidae152025+23%1973
Eastern MeadowlarkIcteridae132025-81%1973
Common YellowthroatParulidae112025+5%1973
Wood DuckAnatidae112025+150%2001
Eurasian Collared-DoveColumbidae102025+117%2006
Purple MartinHirundinidae92025+56%1973
Brown-headed CowbirdIcteridae92025+0%1974
Cedar WaxwingBombycillidae92022-39%1997
Northern BobwhiteOdontophoridae72025+0%1973
Chimney SwiftApodidae72025+7%1974
Turkey VultureCathartidae72025+100%2002
Blue GrosbeakCardinalidae72025+475%2005
Gray CatbirdMimidae62025+250%1973
Great Blue HeronArdeidae62025+114%1993
Carolina ChickadeeParidae62025+100%1974
Fish CrowCorvidae62025+100%2023
Great Crested FlycatcherTyrannidae52025+125%1973
Chipping SparrowPasserellidae52025+150%1991
Northern House WrenTroglodytidae52025+340%1973
American GoldfinchFringillidae42024+8%1973
Field SparrowPasserellidae42024-72%1973
Yellow-breasted ChatIcteriidae42025+117%1973
Brown ThrasherMimidae42025-36%1973
Tufted TitmouseParidae42025-56%1973

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