BirdAnalyst
BBS Route · Illinois · BCR 22

Concord West Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 91 species recorded across 21 survey years, still active.

91Species 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 →
21Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2001–2023Span
3Observers

Bird Species Found on Illinois Concord West

Top 40 of 91 species by most recent count. Each links to its species trend.

Species recorded on the Concord West 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 BlackbirdIcteridae762023-43%2003
DickcisselCardinalidae672023+217%2003
American RobinTurdidae462023-39%2003
House SparrowPasseridae412023-73%2003
Mourning DoveColumbidae312023+10%2003
Eastern MeadowlarkIcteridae302023-36%2003
KilldeerCharadriidae292023+43%2003
Northern BobwhiteOdontophoridae202023-32%2003
Rock PigeonColumbidae192016-17%2005
Chipping SparrowPasserellidae162023+4%2003
Northern CardinalCardinalidae142023-17%2003
Barn SwallowHirundinidae122023-36%2003
BobolinkIcteridae12200712×2004
Indigo BuntingCardinalidae112023-21%2003
Common YellowthroatParulidae112023+33%2003
American CrowCorvidae102023-67%2003
Song SparrowPasserellidae92023-57%2003
Red-bellied WoodpeckerPicidae72023+9%2003
Eastern Wood-PeweeTyrannidae72023+111%2003
European StarlingSturnidae72023-90%2003
Eastern BluebirdTurdidae72017-50%2003
Red-headed WoodpeckerPicidae62023+0%2003
Blue JayCorvidae62023-18%2003
Field SparrowPasserellidae62023+0%2003
Brown-headed CowbirdIcteridae52023-63%2003
Northern House WrenTroglodytidae52023+24%2003
Belted KingfisherAlcedinidae42017+300%2002
American GoldfinchFringillidae42023+13%2004
Rose-breasted GrosbeakCardinalidae42023+27%2004
Eastern KingbirdTyrannidae32023-59%2003
House FinchFringillidae32023+80%2003
Yellow WarblerParulidae32023+40%2003
Northern MockingbirdMimidae32021-57%2003
Gray CatbirdMimidae32023+88%2003
Tufted TitmouseParidae32023-17%2003
Downy WoodpeckerPicidae32023-33%2005
Carolina WrenTroglodytidae32023-14%2004
Eastern TowheePasserellidae32023+75%2011
MallardAnatidae22019-14%2004
Red-tailed HawkAccipitridae22021-60%2003

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