BirdAnalyst
Species · BCR 9 · BBS 2026 Release · 1966–2025

Common Nighthawk In Great Basin

All regionsGreat BasinAerial insectivores

Common Nighthawk in Great Basin has increased: up 26% on the route-weighted index since 1970.

+26%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 →
249Routes In RegionSurvey 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 SignalsNotable 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 Great Basin. See the full index history below.

Common Nighthawk In Great Basin Population Forecast

If the recent trend holds, Common Nighthawk in Great Basin is projected to fall about 10% by 2030 — from 3.1 in 2025 to a central estimate of 2.8 (95% range 1.3–4.3). A 5-year backtest shows a typical error of ±23.1%, with 100% of held-out values landing inside the 95% band.

-10%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 →
2.8Projected 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 →
1.3–4.395% 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 →
±23.1%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 Great Basin is projected to fall about 10% by 2030 — from 3.1 in 2025 to a central estimate of 2.8 (95% range 1.3–4.3). A 5-year backtest shows a typical error of ±23.1%, 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 →
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20302.81.34.3

Routes In Great Basin

Routes recording Common Nighthawk in Great Basin.
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 →
Hanford SiteWASHINGTON511996
Dinner StaNEVADA421993
Barnes ValOREGON291987
Lapham Res.OREGON262025
Columbia NwrWASHINGTON232022
IngallsCALIFORNIA222025
CalienteNEVADA192025
Catlow RimOREGON172025
Clear Lk ResCALIFORNIA152018
Davis LakeOREGON152025
TionestaCALIFORNIA142021
Blitzen 2OREGON142025
Chimney Res.NEVADA132025
Three ForksOREGON132025
Horn RapidsWASHINGTON132024
Twin ButtesIDAHO122025
SutcliffeNEVADA121972
RavendaleCALIFORNIA112025
MinervaNEVADA112024
CliveUTAH112014
Arid Land ErWASHINGTON111996
Hot SpringIDAHO102025
SistersOREGON102025
LynnUTAH102023
Pine CreekUTAH102021

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