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Species · Wyoming · BBS 2025 Release · 1966–2024

Common Nighthawk Population Trend in Wyoming

All statesAerial insectivores

Common Nighthawk in Wyoming has risen sharply: up 51% on the route-weighted index since 1970.

+51%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 →
130Routes 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 →
56YearsYears 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 Nighthawk 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 Nighthawk has risen sharply in Wyoming: up 51% on the route-weighted index since 1970.

Common Nighthawk Population Forecast in Wyoming

If the recent trend holds, Common Nighthawk in Wyoming is projected to fall about 30% by 2029 — from 3.5 in 2024 to a central estimate of 2.5 (95% range 0.55–4.4). A 5-year backtest shows a typical error of ±24.7%, 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 →
2.5Projected 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 →
0.55–4.495% 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 →
±24.7%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 Nighthawk in Wyoming is projected to fall about 30% by 2029 — from 3.5 in 2024 to a central estimate of 2.5 (95% range 0.55–4.4). A 5-year backtest shows a typical error of ±24.7%, 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 →
20252.50.574.4
20262.50.574.4
20272.50.564.4
20282.50.564.4
20292.50.554.4

Common Nighthawk Survey Routes in Wyoming

Routes recording Common Nighthawk 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 →
Seedskadee 25020242024
Green River3119841977
Thunder Basin2320242011
Carter 22220242018
Seedskadee1720231986
Boulder1620181982
Meadowdale1520191983
Wyarno1420241974
Glenrock1419771970
Ethete1220241993
Worland1220241992
Pathfinder1220241983
Caballa Crk1220211992
Seely 21120222004
Black Rock 21120242011
Riverview1020221982
Newcastle1020241988
Bill920181974
Fontenelle920241982
Clark920231990
Seely920001990
Lysite920241989
Fletcher Pk820241979
Shawnee720241988
Lingle720211983

Common Nighthawk Population Trend in Other States

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

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