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

Cassin's Kingbird In Sonoran and Mojave Deserts

All regionsSonoran and Mojave DesertsAerial insectivores

Cassin's Kingbird in Sonoran and Mojave Deserts has declined: down 34% on the route-weighted index since 1970.

-34%Since 1970
25Routes In Region
46Years

Notable Signals

No notable trend signals for Cassin's Kingbird in Sonoran and Mojave Deserts. See the full index history below.

Forecast

If the recent trend holds, Cassin's Kingbird in Sonoran and Mojave Deserts is projected to stay roughly flat through 2029, near 0.01 (95% range 0.00–0.52). A 5-year backtest shows a typical error of ±126.2%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029
0.01Projected 2029 index
0.00–0.5295% range
±126.2%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
20250.030.000.54
20260.030.000.54
20270.020.000.53
20280.010.000.52
20290.010.000.52

Routes In Sonoran and Mojave Deserts

Routes recording Cassin's Kingbird in Sonoran and Mojave Deserts.
Imperial DamCALIFORNIA82006
LenwoodCALIFORNIA71980
CimaCALIFORNIA41998
Palo VerdeARIZONA32006
CottonwoodCALIFORNIA31989
Casa GrandeARIZONA22011
Bates WellARIZONA21995
PearblossomCALIFORNIA22016
OatmanARIZONA12006
QuartzsiteARIZONA11974
VicksburgARIZONA11972
FlorenceARIZONA11968
LagunaARIZONA11980
AntaresARIZONA12024
Alamo Res.ARIZONA12023
Cutter 2ARIZONA12016
OnyxCALIFORNIA11980
Valley WellsCALIFORNIA12014
BarstowCALIFORNIA11973
GlamisCALIFORNIA11977
Anza BorregoCALIFORNIA11997
TecopaCALIFORNIA11983
EssexCALIFORNIA11994
Kelso ValleyCALIFORNIA11973
NelsonNEVADA12010

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