BirdAnalyst
Species · Oregon · BBS 2025 Release · 1966–2024

Common Nighthawk Population Trend in Oregon

All statesAerial insectivores

Common Nighthawk in Oregon has held roughly steady: down 4% on the route-weighted index since 1970.

-4%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 →
121Routes 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 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 stay roughly flat through 2029, near 1.8 (95% range 0.42–3.1). A 5-year backtest shows a typical error of ±9.4%, with 100% of held-out values landing inside the 95% band.

-6%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 →
1.8Projected 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 →
0.42–3.195% 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 →
±9.4%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 stay roughly flat through 2029, near 1.8 (95% range 0.42–3.1). A 5-year backtest shows a typical error of ±9.4%, 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 →
20251.80.483.1
20261.80.463.1
20271.80.453.1
20281.80.443.1
20291.80.423.1

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
Fish Lake1820231972
Lapham Res.1420241991
Paunina1420131993
Blitzen 21320241996
Clover Creek1120241989
Howard Mdws.1020241992
Trout Creek1020211996
Adrian920211984
Malheur Nwr920221986
Malheur Res.920232022
Cool Camp820131968
Logdell820221986
Alvord Lake820241969
Montague820241979
Monument820241993
Ordnance719781972
Crowley720241983
Eagle Rock719791971
Barnhouse720241998
Badger Creek620241992
Madras620231997
Bald Mtn.620241992
Catlow Rim620241993
Camp Sherman519941974

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 2026-05-22.