BirdAnalyst
Species · BCR 9 · BBS 2025 Release · 1966–2024

Common Poorwill In Great Basin

All regionsGreat BasinAerial insectivores

Common Poorwill in Great Basin has held roughly steady: down 3% on the route-weighted index since 1970.

-3%Since 1970
91Routes In Region
54Years

Notable Signals

No notable trend signals for Common Poorwill in Great Basin. See the full index history below.

Forecast

If the recent trend holds, Common Poorwill in Great Basin is projected to stay roughly flat through 2029, near 0.09 (95% range 0.00–0.19). A 5-year backtest shows a typical error of ±38.7%, with 100% of held-out values landing inside the 95% band.

-2%Change by 2029
0.09Projected 2029 index
0.00–0.1995% range
±38.7%Backtest error
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 index95% low95% high
20250.090.000.19
20260.090.000.19
20270.090.000.19
20280.090.000.19
20290.090.000.19

Routes In Great Basin

Routes recording Common Poorwill in Great Basin.
Big PineCALIFORNIA41999
Twin ButtesIDAHO42001
Lost RiverIDAHO41995
Bald Mtn.NEVADA42023
AlmoIDAHO32000
Dobbin CreekNEVADA31970
Flook LakeOREGON32024
TonasketWASHINGTON31983
Crowley LakeCALIFORNIA21983
Clear Lk ResCALIFORNIA22000
RanchograndeNEVADA22016
EurekaNEVADA21998
GardnervilleNEVADA21997
Gardnerville 2NEVADA22024
CrowleyOREGON22022
Alvord LakeOREGON22006
EightmileOREGON21993
Green Mtn.OREGON22022
Oak CityUTAH21990
Iron SpringsUTAH21992
TwispWASHINGTON21991
MazamaWASHINGTON22001
NubieberCALIFORNIA12018
BentonCALIFORNIA12016
BodieCALIFORNIA12014

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