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Species · Louisiana · BBS 2026 Release · 1966–2025

Eurasian Collared-Dove Population Trend in Louisiana

All statesGeneralists

Eurasian Collared-Dove in Louisiana has surged: up 485% on the route-weighted index since 2000.

+485%Since 2000TrendPercent 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 →
69Routes 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 →
27YearsYears 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 LouisianaNotable 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 Louisiana: up 485% on the route-weighted index since 2000.

Eurasian Collared-Dove Population Forecast in Louisiana

If the recent trend holds, Eurasian Collared-Dove in Louisiana is projected to rise about 54% by 2030 — from 1.9 in 2025 to a central estimate of 3.0 (95% range 1.0–5.0). A 5-year backtest shows a typical error of ±108.4%, with 20% of held-out values landing inside the 95% band.

+54%Change by 2030TrendPercent 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 →
3.0Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
1.0–5.095% 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 →
±108.4%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 Louisiana is projected to rise about 54% by 2030 — from 1.9 in 2025 to a central estimate of 3.0 (95% range 1.0–5.0). A 5-year backtest shows a typical error of ±108.4%, with 20% of held-out values landing inside the 95% band.19982030
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 →
20262.80.854.8
20272.90.904.8
20282.90.944.9
20292.90.984.9
20303.01.05.0

Eurasian Collared-Dove Survey Routes in Louisiana

Routes recording Eurasian Collared-Dove in Louisiana.
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 →
Vinton 21320252011
Hackberry 21220252018
Keystone1020132000
Maurice1020242000
Esther820252000
Ltl Chenier 2820112010
Floyd720211999
Forked Island620252008
Mayflower520252002
Kaplan520231999
Richard520252007
Frogmore520252002
Hackberry420162000
Forked Island 2420112010
Glencoe420182000
Goodwill420252006
Zwolle420232004
Grand Isle420192010
Ltl Chenier420212004
Bickham320252001
Mer Rouge320082002
Clay320252007
Greensburg320222005
De Quincy320192001
Mount Union320242013

Eurasian Collared-Dove Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradofloridageorgiaidahoillinoisindianaiowakansaskentuckymarylandmichiganminnesotamississippimissourimontananebraskanevadanew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniasouth-carolinasouth-dakotatennesseetexasutahvirginiawashingtonwisconsinwyoming

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.