BirdAnalyst
BBS Route · Illinois · BCR 22

Humphrey Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 90 species recorded across 52 survey years, still active.

90Species 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 →
52Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1972–2025Span
5Observers

Bird Species Found on Illinois Humphrey

Top 40 of 90 species by most recent count. Each links to its species trend.

Species recorded on the Humphrey 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 BlackbirdIcteridae1112025+17%1974
American RobinTurdidae892025+143%1974
European StarlingSturnidae872025-35%1974
Brown-headed CowbirdIcteridae512025+150%1974
Barn SwallowHirundinidae482025+171%1974
Common GrackleIcteridae382025-50%1974
American CrowCorvidae352025+300%1974
DickcisselCardinalidae322025+13%1974
Mourning DoveColumbidae312025+61%1974
Indigo BuntingCardinalidae292025+102%1974
KilldeerCharadriidae282025+929%1977
Northern CardinalCardinalidae272025+113%1974
House SparrowPasseridae272025-86%1974
Song SparrowPasserellidae152025-44%1974
Northern House WrenTroglodytidae152025+175%1974
Common YellowthroatParulidae142025+31%1974
Eastern MeadowlarkIcteridae112025-70%1974
Blue JayCorvidae102025+13%1974
Red-bellied WoodpeckerPicidae92025+286%1979
Chipping SparrowPasserellidae92025+389%1984
Carolina WrenTroglodytidae82025+100%1974
Rock PigeonColumbidae72025+438%1974
House FinchFringillidae72024+75%1994
Turkey VultureCathartidae72025+225%2005
Eastern Wood-PeweeTyrannidae62025+340%1974
Eastern PhoebeTyrannidae62025+250%1983
Rose-breasted GrosbeakCardinalidae52025+25%1975
Warbling VireoVireonidae52025+275%1975
Gray CatbirdMimidae52025+25%1974
Brown ThrasherMimidae52025-43%1974
Tufted TitmouseParidae52025+20%1974
Red-headed WoodpeckerPicidae42025-53%1974
Eastern KingbirdTyrannidae42025-23%1974
Northern BobwhiteOdontophoridae32025-90%1974
Downy WoodpeckerPicidae32025+50%1976
Field SparrowPasserellidae32025-80%1974
Canada GooseAnatidae32025+0%2000
Chimney SwiftApodidae22025-78%1974
Great Crested FlycatcherTyrannidae22025+17%1975
American GoldfinchFringillidae22025-42%1974

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