BirdAnalyst
Species · Wyoming · BBS 2026 Release · 1966–2025

Northern Mockingbird Population Trend in Wyoming

All statesGeneralists

Northern Mockingbird in Wyoming has held roughly steady: down 2% on the route-weighted index since 1979.

-2%Since 1979TrendPercent 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 →
20Routes 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 →
34YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Northern Mockingbird 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 →

No notable trend signals for Northern Mockingbird in Wyoming. See the full index history below.

Northern Mockingbird Population Forecast in Wyoming

If the recent trend holds, Northern Mockingbird in Wyoming is projected to fall about 18% by 2030 — from 0.07 in 2025 to a central estimate of 0.06 (95% range 0.00–0.13). A 5-year backtest shows a typical error of ±68%, with 40% of held-out values landing inside the 95% band.

-18%Change by 2030TrendPercent 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 →
0.06Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.1395% 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 →
±68%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, Northern Mockingbird in Wyoming is projected to fall about 18% by 2030 — from 0.07 in 2025 to a central estimate of 0.06 (95% range 0.00–0.13). A 5-year backtest shows a typical error of ±68%, with 40% of held-out values landing inside the 95% band.19732030
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 →
20260.060.000.13
20270.060.000.13
20280.060.000.13
20290.060.000.13
20300.060.000.13

Northern Mockingbird Survey Routes in Wyoming

Routes recording Northern Mockingbird 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 →
Baggs620221997
Sussex420252007
Thunder Basin220252024
Lingle219951995
Rock Springs220222021
Pine Bluff220241979
Otto120032002
Redbird119861973
Ervay120142014
Brookhurst119781978
Dwyer120251996
Gvnt Valley120232023
Arvada120022002
Sand Draw120172017
Lamont119981998
Bucknum119931993
Fletcher Pk120242024
Lusk120232023
Chugwater120221980
Flamin Gorge120242017

Northern Mockingbird Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsin

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.