BirdAnalyst
BBS Route · Illinois · BCR 22

Humboldt Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 99 species recorded across 54 survey years, still active.

99Species 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 →
54Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1970–2025Span
7Observers

Bird Species Found on Illinois Humboldt

Top 40 of 99 species by most recent count. Each links to its species trend.

Species recorded on the Humboldt 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
House SparrowPasseridae1522025-63%1972
Red-winged BlackbirdIcteridae1032025-11%1972
American RobinTurdidae962025+295%1972
DickcisselCardinalidae902025+42%1972
European StarlingSturnidae822025+27%1972
Mourning DoveColumbidae492025+23%1972
KilldeerCharadriidae412025+420%1973
Northern CardinalCardinalidae382025+98%1972
Brown-headed CowbirdIcteridae35202512×1972
Common GrackleIcteridae352025-83%1972
Song SparrowPasserellidae322025+138%1972
Barn SwallowHirundinidae272025+15%1972
American CrowCorvidae232025-56%1972
Chipping SparrowPasserellidae232025+711%1988
Indigo BuntingCardinalidae222025+300%1972
Northern House WrenTroglodytidae21202517×1976
Rock PigeonColumbidae202025+63%1972
Eastern MeadowlarkIcteridae202025-77%1972
Common YellowthroatParulidae152025+323%1972
Ring-necked PheasantPhasianidae132025-88%1972
Horned LarkAlaudidae112025-74%1972
Purple MartinHirundinidae112025+118%1988
American GoldfinchFringillidae102025+135%1972
Eurasian Collared-DoveColumbidae102025+39%2016
Blue JayCorvidae92025+36%1972
Warbling VireoVireonidae92025+467%1977
Red-headed WoodpeckerPicidae82025-75%1972
Red-bellied WoodpeckerPicidae82025+267%1983
Vesper SparrowPasserellidae52025+11%1974
Great Horned OwlStrigidae52019+100%1984
Yellow WarblerParulidae52025+75%1995
Red-tailed HawkAccipitridae52024+267%1990
Blue GrosbeakCardinalidae52025+75%2018
Cliff SwallowHirundinidae52025+20%2014
Baltimore OrioleIcteridae42021+175%1975
Tufted TitmouseParidae42025+125%1977
Wood ThrushTurdidae42022+13%2005
Northern BobwhiteOdontophoridae32025-89%1972
Yellow-billed CuckooCuculidae32021-46%1973
Eastern KingbirdTyrannidae32025+133%1972

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