BirdAnalyst
BBS Route · Illinois · BCR 22

Allerton Park Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 93 species recorded across 22 survey years, still active.

93Species 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 →
22Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2001–2024Span
2Observers

Bird Species Found on Illinois Allerton Park

Top 40 of 93 species by most recent count. Each links to its species trend.

Species recorded on the Allerton Park 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 StarlingSturnidae872024-66%2003
American RobinTurdidae472024-45%2003
Red-winged BlackbirdIcteridae422024-46%2003
DickcisselCardinalidae362024+73%2003
House SparrowPasseridae352024-64%2003
KilldeerCharadriidae172024-11%2003
Mourning DoveColumbidae172024-16%2003
Eastern MeadowlarkIcteridae152024-45%2003
Song SparrowPasserellidae152024+12%2003
Brown-headed CowbirdIcteridae132024+7%2003
Northern CardinalCardinalidae112024+5%2003
Indigo BuntingCardinalidae112024+27%2003
Common GrackleIcteridae92024-82%2003
Canada GooseAnatidae82024+127%2015
American CrowCorvidae82024-53%2003
American GoldfinchFringillidae72024+17%2003
Common YellowthroatParulidae72024+150%2003
Chipping SparrowPasserellidae62024-53%2003
Great Crested FlycatcherTyrannidae62023+50%2006
Eastern Wood-PeweeTyrannidae52023+200%2003
Northern House WrenTroglodytidae52024+0%2003
Eastern KingbirdTyrannidae42024-8%2003
Baltimore OrioleIcteridae42022-33%2003
Field SparrowPasserellidae42024+0%2003
House FinchFringillidae42024+0%2004
Turkey VultureCathartidae42023+75%2006
Northern Rough-winged SwallowHirundinidae42023+78%2007
Cliff SwallowHirundinidae42024-54%2017
MallardAnatidae32015+67%2009
Ring-necked PheasantPhasianidae32024-72%2003
American KestrelFalconidae32024-50%2003
Downy WoodpeckerPicidae32023+25%2003
Gray CatbirdMimidae32024+22%2003
Eurasian Collared-DoveColumbidae32019+0%2012
Rock PigeonColumbidae22019-61%2003
Red-bellied WoodpeckerPicidae22024+14%2003
Horned LarkAlaudidae22024-97%2003
Blue JayCorvidae22024+18%2003
Vesper SparrowPasserellidae22024-64%2003
Barn SwallowHirundinidae22024-78%2003

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