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

Varied Bunting In Sierra Madre Occidental

All regionsSierra Madre OccidentalGeneralists

Varied Bunting in Sierra Madre Occidental has declined: down 33% on the route-weighted index since 1971.

-33%Since 1971
8Routes In Region
51Years

Notable Signals

No notable trend signals for Varied Bunting in Sierra Madre Occidental. See the full index history below.

Forecast

If the recent trend holds, Varied Bunting in Sierra Madre Occidental is projected to fall about 52% by 2029 — from 0.61 in 2024 to a central estimate of 0.29 (95% range 0.00–0.78). A 5-year backtest shows a typical error of ±63.4%, with 80% of held-out values landing inside the 95% band.

-52%Change by 2029
0.29Projected 2029 index
0.00–0.7895% range
±63.4%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
20250.300.000.79
20260.300.000.79
20270.300.000.79
20280.290.000.79
20290.290.000.78

Routes In Sierra Madre Occidental

Routes recording Varied Bunting in Sierra Madre Occidental.
PomereneARIZONA72024
PatagoniaARIZONA42024
AmadoARIZONA42023
Peña BlancaARIZONA32023
RedingtonARIZONA12021
SahuaritaARIZONA12019
McnealARIZONA12021
PortalARIZONA12005

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