BirdAnalyst
Species · North Dakota · BBS 2025 Release · 1966–2024

Gray Catbird Population Trend in North Dakota

All statesGeneralists

Gray Catbird in North Dakota has increased: up 42% on the route-weighted index since 1969.

+42%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 →
51Routes 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 Gray Catbird Trends in North DakotaNotable 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 Gray Catbird in North Dakota. See the full index history below.

Gray Catbird Population Forecast in North Dakota

If the recent trend holds, Gray Catbird in North Dakota is projected to stay roughly flat through 2029, near 2.1 (95% range 1.5–2.6). A 5-year backtest shows a typical error of ±12.3%, with 100% of held-out values landing inside the 95% band.

-1%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 →
2.1Projected 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 →
1.5–2.695% 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 →
±12.3%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 North Dakota is projected to stay roughly flat through 2029, near 2.1 (95% range 1.5–2.6). A 5-year backtest shows a typical error of ±12.3%, 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 →
20252.01.42.6
20262.01.42.6
20272.01.42.6
20282.01.52.6
20292.11.52.6

Gray Catbird Survey Routes in North Dakota

Routes recording Gray Catbird in North Dakota.
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 →
Turtle Mtns1520241980
Tobacco1020191968
Cooperstown720241969
Stanley620231967
Edgeley520241980
Emerado520241973
Gorham520181972
Buchanan420241968
Carpio420231967
Denbigh420241968
Loraine320181982
Golva320231988
Douglas Crk320241986
Solen320242006
Abercrombie 2320172013
Walcott220231967
Sydney219831969
Kempton220171968
Wimbledon220151995
Horsehead Lk220211980
Rolla220241969
Niles220231989
Ft Yates220041970
Abercrombie220121968
Zap220241967

Gray Catbird Population Trend in Other States

alabamaarizonaarkansascoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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