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

Common Nighthawk Population Trend in Oregon

All statesAerial insectivores

Common Nighthawk in Oregon has held roughly steady: up 0% on the route-weighted index since 1970.

+0%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 →
123Routes 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 Nighthawk Trends in OregonNotable 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 Common Nighthawk in Oregon. See the full index history below.

Common Nighthawk Population Forecast in Oregon

If the recent trend holds, Common Nighthawk in Oregon is projected to fall about 27% by 2030 — from 2.5 in 2025 to a central estimate of 1.8 (95% range 0.46–3.1). A 5-year backtest shows a typical error of ±15.1%, with 100% of held-out values landing inside the 95% band.

-27%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 →
1.8Projected 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 →
0.46–3.195% 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 →
±15.1%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 Oregon is projected to fall about 27% by 2030 — from 2.5 in 2025 to a central estimate of 1.8 (95% range 0.46–3.1). A 5-year backtest shows a typical error of ±15.1%, 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 →
20261.80.513.2
20271.80.503.2
20281.80.493.2
20291.80.473.1
20301.80.463.1

Common Nighthawk Survey Routes in Oregon

Routes recording Common Nighthawk in Oregon.
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 →
Barnes Val2919871971
Lapham Res.2620251991
Catlow Rim1720251993
Davis Lake1520252000
Blitzen 21420251996
Three Forks1320252003
Sisters1020251997
Malheur Nwr920221986
Bowden Hills920251999
Malheur Res.920232022
Cool Camp820131968
Madras820251997
Ordnance719781972
Eagle Rock719791971
Mt Hood720251974
Summit Pr720251980
Barnhouse720241998
Monument720251993
Trout Creek720251996
Crowley620251983
Sparta620251971
Badger Creek620251992
Crooked Riv.620251996
Paisley520251974
Montague520251979

Common Nighthawk Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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