BirdAnalyst
BBS Route · Illinois · BCR 22

Chandlervill Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 113 species recorded across 44 survey years, still active.

113Species 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 →
44Years 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 Chandlervill

Top 40 of 113 species by most recent count. Each links to its species trend.

Species recorded on the Chandlervill 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
American RobinTurdidae882025+103%1973
Red-winged BlackbirdIcteridae842025-9%1973
Barn SwallowHirundinidae682025+89%1973
DickcisselCardinalidae652025+16%1973
European StarlingSturnidae632025+54%1973
Mourning DoveColumbidae582025-10%1973
Turkey VultureCathartidae532025+817%1973
Brown-headed CowbirdIcteridae412025+190%1973
House SparrowPasseridae372025-85%1973
Eastern MeadowlarkIcteridae362025+8%1973
Northern BobwhiteOdontophoridae302025-60%1973
Indigo BuntingCardinalidae282025-2%1973
KilldeerCharadriidae262025+270%1973
Cliff SwallowHirundinidae252025+27%2016
American GoldfinchFringillidae222025-39%1973
Blue JayCorvidae152025-46%1973
American CrowCorvidae142025-53%1973
Eastern KingbirdTyrannidae132025+63%1973
Chipping SparrowPasserellidae132025+129%1973
Ring-necked PheasantPhasianidae122025-31%1973
Horned LarkAlaudidae122025-75%1973
Great EgretArdeidae121974+200%1973
Blue GrosbeakCardinalidae122025+533%1984
Red-bellied WoodpeckerPicidae112025+131%1973
Common YellowthroatParulidae92025-31%1973
Red-headed WoodpeckerPicidae82025+6%1973
Baltimore OrioleIcteridae82025-38%1973
Northern CardinalCardinalidae82025-25%1973
Warbling VireoVireonidae82025+69%1973
Northern House WrenTroglodytidae82025-38%1973
Rose-breasted GrosbeakCardinalidae72025+42%1973
Wood ThrushTurdidae72025+225%1996
Yellow-crowned Night HeronArdeidae61974n/an/a
Downy WoodpeckerPicidae52024-30%1975
Eastern Wood-PeweeTyrannidae52025+214%1973
Common GrackleIcteridae52025-96%1973
Song SparrowPasserellidae52025-76%1973
Cedar WaxwingBombycillidae52025+22%1977
American KestrelFalconidae42025+367%1980
Eastern TowheePasserellidae42022+60%1973

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