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

Thick-billed Kingbird In Sierra Madre Occidental

All regionsSierra Madre OccidentalAerial insectivores

Thick-billed Kingbird in Sierra Madre Occidental has edged up: up 22% on the route-weighted index since 1979.

+22%Since 1979
3Routes In Region
40Years

Notable Signals

No notable trend signals for Thick-billed Kingbird in Sierra Madre Occidental. See the full index history below.

Forecast

If the recent trend holds, Thick-billed Kingbird in Sierra Madre Occidental is projected to fall about 74% by 2029 — from 0.17 in 2024 to a central estimate of 0.04 (95% range 0.00–0.57). A 5-year backtest shows a typical error of ±66.9%, with 100% of held-out values landing inside the 95% band.

-74%Change by 2029
0.04Projected 2029 index
0.00–0.5795% range
±66.9%Backtest error
19752029
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
20250.060.000.59
20260.060.000.58
20270.050.000.58
20280.050.000.57
20290.040.000.57

Routes In Sierra Madre Occidental

Routes recording Thick-billed Kingbird in Sierra Madre Occidental.
PatagoniaARIZONA32024
Peña BlancaARIZONA22006
AmadoARIZONA12007

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