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Species · Louisiana · BBS 2025 Release · 1966–2024

White-breasted Nuthatch Population Trend in Louisiana

All statesForest birds

White-breasted Nuthatch in Louisiana has edged down: down 21% on the route-weighted index since 1970.

-21%Since 1970TrendPercent 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 →
15Routes 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 →
22YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable White-breasted Nuthatch 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 White-breasted Nuthatch in Louisiana. See the full index history below.

White-breasted Nuthatch Population Forecast in Louisiana

If the recent trend holds, White-breasted Nuthatch in Louisiana is projected to fall about 65% by 2029 — from 0.10 in 2024 to a central estimate of 0.03 (95% range 0.00–0.10). A 5-year backtest shows a typical error of ±40.9%, with 80% of held-out values landing inside the 95% band.

-65%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 →
0.03Projected 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 →
0.00–0.1095% 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 →
±40.9%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, White-breasted Nuthatch in Louisiana is projected to fall about 65% by 2029 — from 0.10 in 2024 to a central estimate of 0.03 (95% range 0.00–0.10). A 5-year backtest shows a typical error of ±40.9%, with 80% of held-out values landing inside the 95% band.19682029
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 →
20250.040.000.10
20260.040.000.10
20270.040.000.10
20280.040.000.10
20290.030.000.10

White-breasted Nuthatch Survey Routes in Louisiana

Routes recording White-breasted Nuthatch 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 →
Pearl River419941994
Ivan 2220152014
Mount Union220241999
Haughton120242013
Trout119881988
Lacombe119791979
Tensas Nwr119881988
Ivan120112008
Goodwill120242005
Grayson120092005
Gonzales119991999
Norwood120082008
Chatham119681968
Longstreet120041969
Fillmore119781978

White-breasted Nuthatch Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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