BirdAnalyst
BBS Route · Illinois · BCR 22

Dudleyville Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 112 species recorded across 23 survey years, still active.

112Species 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 →
23Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2001–2024Span
2Observers

Bird Species Found on Illinois Dudleyville

Top 40 of 112 species by most recent count. Each links to its species trend.

Species recorded on the Dudleyville 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
European StarlingSturnidae802024-12%2003
Red-winged BlackbirdIcteridae622024-21%2003
Canada GooseAnatidae462024+336%2005
House SparrowPasseridae442024+4%2003
American CrowCorvidae352024+242%2003
Northern CardinalCardinalidae292024-12%2003
Indigo BuntingCardinalidae282024+0%2003
American RobinTurdidae272024-41%2003
Horned LarkAlaudidae232024-29%2003
Chimney SwiftApodidae222024-51%2003
Common GrackleIcteridae222024-68%2003
DickcisselCardinalidae212024+68%2003
Song SparrowPasserellidae192024+41%2003
Tufted TitmouseParidae162024+49%2003
Mourning DoveColumbidae152024+20%2003
KilldeerCharadriidae142024-33%2003
Field SparrowPasserellidae142024+46%2003
Cliff SwallowHirundinidae132024+80%2010
Common YellowthroatParulidae112024+67%2003
Purple MartinHirundinidae112024+375%2009
Red-bellied WoodpeckerPicidae102024-16%2003
Blue GrosbeakCardinalidae92024+440%2003
Blue JayCorvidae82024-48%2003
House FinchFringillidae82024+60%2004
American GoldfinchFringillidae82024-12%2003
Barn SwallowHirundinidae82024-54%2003
Fish CrowCorvidae82023+167%2021
Turkey VultureCathartidae72024+84%2003
Brown-headed CowbirdIcteridae72024-11%2003
Northern MockingbirdMimidae72024+0%2003
Northern House WrenTroglodytidae72024+0%2003
Eastern BluebirdTurdidae72024-41%2003
Double-crested CormorantPhalacrocoracidae72021+56%2011
Northern BobwhiteOdontophoridae62024-56%2003
Eastern Wood-PeweeTyrannidae62024-8%2003
Chipping SparrowPasserellidae62024-40%2003
Warbling VireoVireonidae62024-39%2003
Red-tailed HawkAccipitridae52024+160%2003
Eastern MeadowlarkIcteridae52024-65%2003
Gray CatbirdMimidae52024+92%2003

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