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

Eurasian Collared-Dove Population Trend in Colorado

All statesGeneralists

Eurasian Collared-Dove in Colorado has surged: up 26× on the route-weighted index since 2005.

26×Since 2005TrendPercent 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 →
106Routes 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 →
21YearsYears 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 ColoradoNotable 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 Colorado: up 26× on the route-weighted index since 2005.

Eurasian Collared-Dove Population Forecast in Colorado

If the recent trend holds, Eurasian Collared-Dove in Colorado is projected to rise about 140% by 2029 — from 2.4 in 2024 to a central estimate of 5.8 (95% range 3.5–8.0). A 5-year backtest shows a typical error of ±111.9%, with 0% of held-out values landing inside the 95% band.

+140%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 →
5.8Projected 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 →
3.5–8.095% 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 →
±111.9%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 Colorado is projected to rise about 140% by 2029 — from 2.4 in 2024 to a central estimate of 5.8 (95% range 3.5–8.0). A 5-year backtest shows a typical error of ±111.9%, with 0% of held-out values landing inside the 95% band.20032029
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 →
20255.02.77.2
20265.22.97.4
20275.43.17.6
20285.63.37.8
20295.83.58.0

Eurasian Collared-Dove Survey Routes in Colorado

Routes recording Eurasian Collared-Dove in Colorado.
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 →
Nunn4620212006
Cortez 22520172009
Adams Co.2420222003
Fruita2120072005
Bethune2120232004
Julesburg2120212007
Falfa1920242008
Fleming1820232005
Briggsdale1720242018
Bennett1720182009
Waverly1520182004
Cheyenne1320242009
Flagler1320242003
Kiowa1220182004
Hudson1120242005
Paonia1120242008
Sheridan Lak1120162009
Rush1020222007
Two Buttes1020152010
Kirk1020232013
Ellicott1020242009
Doyle Bridge 21020222007
Kiowa 2920242019
Burlington920242011
Cortez820082006

Eurasian Collared-Dove Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniafloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamarylandmichiganminnesotamississippimissourimontananebraskanevadanew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniasouth-carolinasouth-dakotatennesseetexasutahvirginiawashingtonwisconsinwyoming

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