BirdAnalyst
Species · BCR 34 · BBS 2025 Release · 1966–2024

Cassin's Kingbird In Sierra Madre Occidental

All regionsSierra Madre OccidentalAerial insectivores

Cassin's Kingbird in Sierra Madre Occidental has declined: down 35% on the route-weighted index since 1970.

-35%Since 1970
35Routes In Region
56Years

Notable Signals

No notable trend signals for Cassin's Kingbird in Sierra Madre Occidental. See the full index history below.

Forecast

If the recent trend holds, Cassin's Kingbird in Sierra Madre Occidental is projected to fall about 60% by 2029 — from 11 in 2024 to a central estimate of 4.4 (95% range 0.00–13). A 5-year backtest shows a typical error of ±42.1%, with 100% of held-out values landing inside the 95% band.

-60%Change by 2029
4.4Projected 2029 index
0.00–1395% range
±42.1%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
20255.30.0014
20265.10.0014
20274.80.0014
20284.60.0013
20294.40.0013

Routes In Sierra Madre Occidental

Routes recording Cassin's Kingbird in Sierra Madre Occidental.
Peña BlancaARIZONA402024
Skull ValleyARIZONA372024
PatagoniaARIZONA342024
ReserveNEW-MEXICO312023
Happy JackARIZONA172024
Mormon LakeARIZONA151974
SunizonaARIZONA141997
Sunizona 2ARIZONA142024
DragoonARIZONA132009
PomereneARIZONA112024
RuckerARIZONA112009
PinetopARIZONA102022
MagdalenaNEW-MEXICO92024
Forest LakesARIZONA82024
PortalARIZONA82024
Emory PassNEW-MEXICO82024
Clay SpringARIZONA72024
AmadoARIZONA62023
BlueARIZONA41991
FlagstaffARIZONA32022
PrescottARIZONA32022
RedingtonARIZONA32023
McnealARIZONA32022
Aztec PeakARIZONA21978
San SimonARIZONA22024

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