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

Greater Roadrunner In Sonoran and Mojave Deserts

All regionsSonoran and Mojave DesertsArid-land birds

Greater Roadrunner in Sonoran and Mojave Deserts has fallen sharply: down 60% on the route-weighted index since 1970.

-60%Since 1970
74Routes In Region
56Years

Notable Signals

long arc declinecomputed index

Greater Roadrunner has fallen sharply in Sonoran and Mojave Deserts: down 60% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Greater Roadrunner in Sonoran and Mojave Deserts is projected to fall about 14% by 2029 — from 0.47 in 2024 to a central estimate of 0.40 (95% range 0.00–1.1). A 5-year backtest shows a typical error of ±35.8%, with 100% of held-out values landing inside the 95% band.

-14%Change by 2029
0.40Projected 2029 index
0.00–1.195% range
±35.8%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
20250.430.001.1
20260.420.001.1
20270.420.001.1
20280.410.001.1
20290.400.001.1

Routes In Sonoran and Mojave Deserts

Routes recording Greater Roadrunner in Sonoran and Mojave Deserts.
WickenburgARIZONA72021
Ajo 2ARIZONA72019
CimaCALIFORNIA62021
New RiverARIZONA32016
Alamo RiverCALIFORNIA31994
BrawleyCALIFORNIA32010
Ash MeadowsNEVADA32024
OatmanARIZONA22018
WikieupARIZONA22018
DatelandARIZONA22021
Alamo Res.ARIZONA22024
ArabyARIZONA22023
Red RockARIZONA22008
Casa GrandeARIZONA22021
Bates WellARIZONA22023
UbehebeCALIFORNIA21987
InyokernCALIFORNIA22024
IvanpahCALIFORNIA21994
EssexCALIFORNIA21994
NilandCALIFORNIA22023
BlytheCALIFORNIA22003
Kelso ValleyCALIFORNIA22022
Squaw PeakARIZONA11970
QuartzsiteARIZONA12024
VicksburgARIZONA11989

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