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BBS Route · Illinois · BCR 24

Delwood Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 108 species recorded across 49 survey years, still active.

108Species Recorded
49Years Surveyed
1970–2024Span
11Observers

Bird Species Found on Illinois Delwood

Top 40 of 108 species by most recent count. Each links to its species trend.

Species recorded on the Delwood route.
History
American CrowCorvidae462024+91%1972
Eastern BluebirdTurdidae432024+130%1972
Northern CardinalCardinalidae402024+51%1972
Indigo BuntingCardinalidae402024+23%1972
Brown-headed CowbirdIcteridae332024+224%1972
Common YellowthroatParulidae332024+114%1972
White-eyed VireoVireonidae312024+219%1972
Wood ThrushTurdidae292024+121%1972
European StarlingSturnidae262024+5%1972
Mourning DoveColumbidae192024-63%1972
Common GrackleIcteridae172022-94%1972
Tufted TitmouseParidae172024+226%1972
Chipping SparrowPasserellidae152024+327%1972
American RobinTurdidae152024-17%1972
Eastern MeadowlarkIcteridae142024-69%1972
Summer TanagerCardinalidae142024+263%1974
Yellow-breasted ChatIcteriidae142024+7%1972
Eastern Wood-PeweeTyrannidae132024-11%1972
American GoldfinchFringillidae132024+125%1972
Eastern TowheePasserellidae132024-51%1972
Blue GrosbeakCardinalidae132024+183%1972
Northern BobwhiteOdontophoridae122024-80%1972
Red-shouldered HawkAccipitridae112024+467%1996
Yellow-billed CuckooCuculidae112024-66%1972
Red-bellied WoodpeckerPicidae112024-23%1972
Barn SwallowHirundinidae112024-84%1972
Cliff SwallowHirundinidae112024-27%1990
Red-winged BlackbirdIcteridae102024-69%1972
Field SparrowPasserellidae102024-48%1972
Carolina WrenTroglodytidae102024+73%1974
White-breasted NuthatchSittidae92024+775%1974
Blue-gray GnatcatcherPolioptilidae92024+175%1977
Downy WoodpeckerPicidae82024+220%1973
Blue JayCorvidae82024-44%1972
Red-eyed VireoVireonidae82024+188%1974
Northern MockingbirdMimidae72024-89%1972
Acadian FlycatcherTyrannidae72024+350%1976
Northern ParulaParulidae72024+733%1984
Northern House WrenTroglodytidae72024+367%1980
Rock PigeonColumbidae62014-44%1972

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