BirdAnalyst
Species · Illinois · BBS 2025 Release · 1966–2024

Eurasian Collared-Dove Population Trend in Illinois

All statesGeneralists

Eurasian Collared-Dove in Illinois has surged: up 37× on the route-weighted index since 2003.

37×Since 2003TrendPercent 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 →
87Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
23YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Eurasian Collared-Dove Trends in IllinoisNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Eurasian Collared-Dove has surged in Illinois: up 37× on the route-weighted index since 2003.

Eurasian Collared-Dove Population Forecast in Illinois

If the recent trend holds, Eurasian Collared-Dove in Illinois is projected to rise about 68% by 2029 — from 2.4 in 2024 to a central estimate of 4.0 (95% range 3.3–4.7). A 5-year backtest shows a typical error of ±28.9%, with 20% of held-out values landing inside the 95% band.

+68%Change by 2029TrendPercent 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 →
4.0Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
3.3–4.795% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±28.9%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Eurasian Collared-Dove in Illinois is projected to rise about 68% by 2029 — from 2.4 in 2024 to a central estimate of 4.0 (95% range 3.3–4.7). A 5-year backtest shows a typical error of ±28.9%, with 20% of held-out values landing inside the 95% band.20012029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20253.52.84.1
20263.62.94.2
20273.73.14.4
20283.93.24.5
20294.03.34.7

Eurasian Collared-Dove Survey Routes in Illinois

Routes recording Eurasian Collared-Dove in Illinois.
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 →
Rosamond1920242003
Beaucoup1120242003
Cave In Rock1120182018
Sterling1020232012
Cameron920242012
St Morgan920222010
Holcomb820242015
Buda820232012
Mill Creek720242013
Stillwell720242002
Clarksdale720232010
Clayton720242008
Atkinson620242007
Newark620222012
Deer Creek620242006
Mt Vernon620242003
Seneca620242004
Darmstadt620242004
Minonk520242012
Pawnee520242017
Eldred520172017
Lake Galena520212008
Yorkville520182004
Gridley520242014
Streator420242011

Eurasian Collared-Dove Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradofloridageorgiaidahoindianaiowakansaskentuckylouisianamarylandmichiganminnesotamississippimissourimontananebraskanevadanew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniasouth-carolinasouth-dakotatennesseetexasutahvirginiawashingtonwisconsinwyoming

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.