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

Great Blue Heron In Sierra Madre Occidental

All regionsSierra Madre OccidentalWetland birds

Great Blue Heron in Sierra Madre Occidental has edged up: up 23% on the route-weighted index since 1978.

+23%Since 1978
23Routes In Region
45Years

Notable Signals

No notable trend signals for Great Blue Heron in Sierra Madre Occidental. See the full index history below.

Forecast

If the recent trend holds, Great Blue Heron in Sierra Madre Occidental is projected to rise about 227% by 2029 — from 0.11 in 2024 to a central estimate of 0.36 (95% range 0.00–2.6). A 5-year backtest shows a typical error of ±304.8%, with 100% of held-out values landing inside the 95% band.

+227%Change by 2029
0.36Projected 2029 index
0.00–2.695% range
±304.8%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
20250.390.002.6
20260.390.002.6
20270.380.002.6
20280.370.002.6
20290.360.002.6

Routes In Sierra Madre Occidental

Routes recording Great Blue Heron in Sierra Madre Occidental.
PatagoniaARIZONA42017
CutterARIZONA32014
PrescottARIZONA22016
Tonto Vill.ARIZONA22021
Bartlett ResARIZONA22022
Happy JackARIZONA22022
SprucedaleARIZONA21998
PomereneARIZONA12024
San SimonARIZONA11984
Peña BlancaARIZONA12005
WilliamsARIZONA12018
MaineARIZONA12011
Skull ValleyARIZONA12024
Forest LakesARIZONA12022
PinetopARIZONA12004
AlpineARIZONA12023
RedingtonARIZONA12010
AmadoARIZONA12012
McnealARIZONA12015
Clay SpringARIZONA12014
Carr MtnARIZONA12023
Sunizona 2ARIZONA12017
ReserveNEW-MEXICO12009

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