BirdAnalyst
Species · BCR 10 · BBS 2025 Release · 1966–2024

Common Poorwill In Northern Rockies

All regionsNorthern RockiesAerial insectivores

Common Poorwill in Northern Rockies has increased: up 28% on the route-weighted index since 1976.

+28%Since 1976TrendPercent 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 →
42Routes 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 →
43YearsYears 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 Poorwill in Northern Rockies. See the full index history below.

Common Poorwill In Northern Rockies Population Forecast

If the recent trend holds, Common Poorwill in Northern Rockies is projected to stay roughly flat through 2029, near 0.06 (95% range 0.01–0.10). A 5-year backtest shows a typical error of ±18.8%, with 100% of held-out values landing inside the 95% band.

n/aChange 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 →
0.06Projected 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 →
0.01–0.1095% 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 →
±18.8%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 Poorwill in Northern Rockies is projected to stay roughly flat through 2029, near 0.06 (95% range 0.01–0.10). A 5-year backtest shows a typical error of ±18.8%, with 100% of held-out values landing inside the 95% band.19722029
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 →
20250.060.010.10
20260.060.010.10
20270.060.010.10
20280.060.010.10
20290.060.010.10

Routes In Northern Rockies

Routes recording Common Poorwill in Northern Rockies.
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 →
RandolphUTAH32024
MeeteetseWYOMING32019
Black Rock 2WYOMING32023
Great DivideCOLORADO22022
LayCOLORADO22024
Clover CreekOREGON21997
Saleratus CrUTAH22018
Crawford MtsUTAH22010
SweetwaterWYOMING22009
Mtn ViewWYOMING21982
Prior FlatsWYOMING22006
MaybellCOLORADO12021
Browns ParkCOLORADO12015
Crane CreekIDAHO12019
WickiupOREGON12019
BridgeportOREGON12010
Silver CreekOREGON12018
UnityOREGON12023
Donelly 2OREGON12019
E. Bear LakeUTAH12022
Omak CreekWASHINGTON12017
DuboisWYOMING12015
NowoodWYOMING12003
FontenelleWYOMING11987
Bear CreekWYOMING12024

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