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

Common Yellowthroat Population Trend in Wyoming

All statesForest birds

Common Yellowthroat in Wyoming has surged: up 116% on the route-weighted index since 1970.

+116%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 →
81Routes 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 Common Yellowthroat 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 →

Common Yellowthroat has surged in Wyoming: up 116% on the route-weighted index since 1970.

Common Yellowthroat Population Forecast in Wyoming

If the recent trend holds, Common Yellowthroat in Wyoming is projected to stay roughly flat through 2030, near 1.2 (95% range 0.43–1.9). A 5-year backtest shows a typical error of ±27.3%, with 100% of held-out values landing inside the 95% band.

+7%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 →
1.2Projected 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 →
0.43–1.995% 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 →
±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, Common Yellowthroat in Wyoming is projected to stay roughly flat through 2030, near 1.2 (95% range 0.43–1.9). A 5-year backtest shows a typical error of ±27.3%, with 100% of held-out values landing inside the 95% band.19682030
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 →
20261.10.411.9
20271.10.411.9
20281.10.421.9
20291.20.421.9
20301.20.431.9

Common Yellowthroat Survey Routes in Wyoming

Routes recording Common Yellowthroat 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 →
Dayton1720251980
Moskee920011980
Mammoth820251982
Moskee 3820252022
Clark720251990
Seedskadee 2720242024
Lingle620241980
Cody520251983
Sundance520251975
Midvale520251987
Ryan Park520122012
Otto420251970
Mayoworth420241983
Colter Bay 2420252019
Lysite320001998
Green River319841977
Sybille Cyn320252000
Fontenelle220251987
Glenrock219761973
Hunter Peak220251982
Meeteetse220251996
Tensleep220251995
Bald Mtn220222022
Soda Well220251979
Wilson220251979

Common Yellowthroat Population Trend in Other States

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

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