BirdAnalyst
Species · BCR 33 · BBS 2025 Release · 1966–2024

Common Poorwill In Sonoran and Mojave Deserts

All regionsSonoran and Mojave DesertsAerial insectivores

Common Poorwill in Sonoran and Mojave Deserts has fallen sharply: down 66% on the route-weighted index since 1970.

-66%Since 1970
33Routes In Region
50Years

Notable Signals

long arc declinecomputed index

Common Poorwill has fallen sharply in Sonoran and Mojave Deserts: down 66% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Common Poorwill in Sonoran and Mojave Deserts is projected to fall about 20% by 2026 — from 0.13 in 2021 to a central estimate of 0.10 (95% range 0.00–0.42). A 5-year backtest shows a typical error of ±21.5%, with 100% of held-out values landing inside the 95% band.

-20%Change by 2026
0.10Projected 2026 index
0.00–0.4295% range
±21.5%Backtest error
19682026
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
20220.110.000.42
20230.110.000.42
20240.110.000.42
20250.100.000.42
20260.100.000.42

Routes In Sonoran and Mojave Deserts

Routes recording Common Poorwill in Sonoran and Mojave Deserts.
Organ PipeARIZONA52021
OnyxCALIFORNIA51998
LagunaARIZONA31968
AjoARIZONA32001
Gila BendARIZONA32009
Cabeza PrietARIZONA32015
Bates WellARIZONA32017
WikieupARIZONA22019
Alamo Res.ARIZONA22019
Cutter 2ARIZONA22018
GoldstoneCALIFORNIA21992
BarstowCALIFORNIA21987
Eureka ValCALIFORNIA21995
CimaCALIFORNIA21995
Squaw PeakARIZONA11969
VicksburgARIZONA11968
New RiverARIZONA11975
FlorenceARIZONA11972
LukevilleARIZONA11977
Cibola LakeARIZONA11998
HopeARIZONA12009
Ajo 2ARIZONA12017
Palo Verde 2ARIZONA12015
UbehebeCALIFORNIA11988
Calif CityCALIFORNIA11980

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