BirdAnalyst
BBS Route · Illinois · BCR 22

Le Roy Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 86 species recorded across 17 survey years, still active.

86Species 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 →
17Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1993–2025Span
5Observers

Bird Species Found on Illinois Le Roy

Top 40 of 86 species by most recent count. Each links to its species trend.

Species recorded on the Le Roy 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 StarlingSturnidae1222025-65%1995
Common GrackleIcteridae982025-71%1995
American RobinTurdidae742025-12%1995
Red-winged BlackbirdIcteridae712025-57%1995
House SparrowPasseridae672025-77%1995
DickcisselCardinalidae662025+219%1995
Brown-headed CowbirdIcteridae352025+86%1995
Mourning DoveColumbidae332025-23%1995
Indigo BuntingCardinalidae332025+173%1995
KilldeerCharadriidae282025+83%1995
Canada GooseAnatidae252014+733%1993
Barn SwallowHirundinidae232025-23%1995
Cliff SwallowHirundinidae182025+53%1996
Eastern MeadowlarkIcteridae172025-48%1995
Vesper SparrowPasserellidae152025+140%1995
Chipping SparrowPasserellidae132025+26%1995
American CrowCorvidae122025+0%1995
Purple MartinHirundinidae122024+333%1994
Northern House WrenTroglodytidae122025+85%1995
Common YellowthroatParulidae112025+63%1995
Tree SwallowHirundinidae92025+213%1995
Rock PigeonColumbidae62025-14%1995
American GoldfinchFringillidae62025-43%1995
Song SparrowPasserellidae62025-62%1995
Northern CardinalCardinalidae62025+0%1995
Northern Rough-winged SwallowHirundinidae62025+53%1996
Eastern KingbirdTyrannidae52025+167%1995
Blue JayCorvidae52025-48%1995
Eurasian Collared-DoveColumbidae52025-7%2018
Horned LarkAlaudidae42025-98%1995
House FinchFringillidae42025+0%1995
Warbling VireoVireonidae42025-13%1996
Eastern BluebirdTurdidae42024-7%1995
American KestrelFalconidae42023+100%1996
Great Blue HeronArdeidae32025+0%1996
Tufted TitmouseParidae32025+125%1995
Eastern PhoebeTyrannidae32025+133%2018
Baltimore OrioleIcteridae32017+133%1995
Cedar WaxwingBombycillidae32025-46%1996
Gray CatbirdMimidae32025+50%1996

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