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Species · Louisiana · BBS 2025 Release · 1966–2024

Chuck-will's-widow Population Trend in Louisiana

All statesAerial insectivores

Chuck-will's-widow in Louisiana has declined: down 34% on the route-weighted index since 1969.

-34%Since 1969TrendPercent 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 →
37Routes 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 →
57YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Chuck-will's-widow 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 →

No notable trend signals for Chuck-will's-widow in Louisiana. See the full index history below.

Chuck-will's-widow Population Forecast in Louisiana

If the recent trend holds, Chuck-will's-widow in Louisiana is projected to fall about 22% by 2029 — from 0.32 in 2024 to a central estimate of 0.25 (95% range 0.00–0.62). A 5-year backtest shows a typical error of ±49.1%, with 100% of held-out values landing inside the 95% band.

-22%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 →
0.25Projected 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 →
0.00–0.6295% 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 →
±49.1%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, Chuck-will's-widow in Louisiana is projected to fall about 22% by 2029 — from 0.32 in 2024 to a central estimate of 0.25 (95% range 0.00–0.62). A 5-year backtest shows a typical error of ±49.1%, with 100% of held-out values landing inside the 95% band.19672029
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 →
20250.270.000.65
20260.270.000.64
20270.260.000.63
20280.250.000.63
20290.250.000.62

Chuck-will's-widow Survey Routes in Louisiana

Routes recording Chuck-will's-widow 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 →
Chatham419751971
Flat Creek420151998
Linville320241998
Fishville320161967
Fishville 2320242018
Roseland220062006
Fort Polk219711971
Fillmore219781968
Trout220231994
Many219911990
Marion219961988
Hargis220112010
Mount Union220241998
Burr Ferry220241987
Cheniere220241986
Haughton120061991
Lacombe119831968
Bickham120181972
Fort Jessup120221999
Plettenberg119731973
Ivan120122006
De Ridder120181979
Mayflower119881988
Cypress119681968
Rayville119991967

Chuck-will's-widow Population Trend in Other States

alabamaarkansasdelawarefloridageorgiaillinoisindianakansaskentuckymarylandmississippimissourinebraskanew-jerseynorth-carolinaohiooklahomasouth-carolinatennesseetexasvirginiawest-virginia

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