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

Gray Catbird Population Trend in Louisiana

All statesGeneralists

Gray Catbird in Louisiana has surged: up 84% on the route-weighted index since 1969.

+84%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 →
50Routes 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 →
55YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Gray Catbird 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 →

Gray Catbird has surged in Louisiana: up 84% on the route-weighted index since 1969.

Gray Catbird Population Forecast in Louisiana

If the recent trend holds, Gray Catbird in Louisiana is projected to rise about 30% by 2029 — from 0.34 in 2024 to a central estimate of 0.44 (95% range 0.11–0.77). A 5-year backtest shows a typical error of ±27.3%, with 100% of held-out values landing inside the 95% band.

+30%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 →
0.44Projected 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 →
0.11–0.7795% 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 →
±27.3%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, Gray Catbird in Louisiana is projected to rise about 30% by 2029 — from 0.34 in 2024 to a central estimate of 0.44 (95% range 0.11–0.77). A 5-year backtest shows a typical error of ±27.3%, 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 →
20250.420.090.75
20260.420.090.75
20270.430.100.76
20280.440.100.77
20290.440.110.77

Gray Catbird Survey Routes in Louisiana

Routes recording Gray Catbird 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 →
Fort Jessup520231998
Bickham420241989
Pearl River420241993
River Road220001991
Roseland220241970
Clay220161970
Franklinton220242009
Lake Cove220182013
Greensburg220221989
Ltl Chenier220182014
Gran Chenier119821982
Creole119711971
Plettenberg120181974
Tensas Nwr120051988
Easton119861967
Hackberry119851968
De Ridder120131967
Shaw119941972
Mayflower119911991
Derry119891968
Fishville120121974
Cypress119751967
Mer Rouge119671967
Rayville119751975
Chatham119731967

Gray Catbird Population Trend in Other States

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

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