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Species · Wyoming · BBS 2025 Release · 1966–2024

Red-breasted Nuthatch Population Trend in Wyoming

All statesForest birds

Red-breasted Nuthatch in Wyoming has surged: up 94% on the route-weighted index since 1970.

+94%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 →
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 →
53YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Red-breasted Nuthatch Trends in WyomingNotable 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 →

Red-breasted Nuthatch has surged in Wyoming: up 94% on the route-weighted index since 1970.

Red-breasted Nuthatch Population Forecast in Wyoming

If the recent trend holds, Red-breasted Nuthatch in Wyoming is projected to rise about 54% by 2029 — from 0.75 in 2024 to a central estimate of 1.2 (95% range 0.47–1.9). A 5-year backtest shows a typical error of ±57.2%, with 100% of held-out values landing inside the 95% band.

+54%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 →
1.2Projected 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 →
0.47–1.995% 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 →
±57.2%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, Red-breasted Nuthatch in Wyoming is projected to rise about 54% by 2029 — from 0.75 in 2024 to a central estimate of 1.2 (95% range 0.47–1.9). A 5-year backtest shows a typical error of ±57.2%, with 100% 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 →
20251.10.421.8
20261.10.431.8
20271.10.441.8
20281.10.451.8
20291.20.471.9

Red-breasted Nuthatch Survey Routes in Wyoming

Routes recording Red-breasted Nuthatch in Wyoming.
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 →
Moskee 3820242022
Sundance720241975
Crazy Woman720241980
Colter Bay 2720242019
Soda Lake720241982
Savery 2720242007
Moskee 2620212002
Colter Bay519991968
Horse Creek520241980
Moose420241978
Yellowstone320221990
Dubois320221982
Mammoth320241982
Hunter Peak320241982
Seely319961996
Moskee320011980
Big Sandy320231992
Ryan Park320231993
Prior Flats220242004
Savery219951989
Yoder219711971
West Thumb219821982
Bald Mtn220191990
Recluse220222022
Fiddler Lk220241982

Red-breasted Nuthatch Population Trend in Other States

alaskaarizonacaliforniacoloradoconnecticutidahoillinoisindianakansasmainemarylandmassachusettsmichiganminnesotamontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseeutahvermontvirginiawashingtonwest-virginiawisconsin

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