Guild · Arizona · BBS 2025 Release · 1966–2024
Wetland Birds In Arizona
13 species in this guild. As a group they are -75% since 1970.
Guild Signals
guild collapsecomputed index
Wetland birds as a group have fallen sharply in Arizona, down 75% since 1970.
Forecast
If the recent trend holds, Wetland birds in Arizona is projected to rise about 35% by 2029 — from 0.11 in 2024 to a central estimate of 0.15 (95% range 0.00–0.60). A 5-year backtest shows a typical error of ±60.9%, with 100% of held-out values landing inside the 95% band.
+35%Change by 2029
0.15Projected 2029 index
0.00–0.6095% range
±60.9%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.17 | 0.00 | 0.62 |
| 2026 | 0.16 | 0.00 | 0.62 |
| 2027 | 0.16 | 0.00 | 0.61 |
| 2028 | 0.15 | 0.00 | 0.61 |
| 2029 | 0.15 | 0.00 | 0.60 |
Member Species In Arizona
| Western Cattle-Egret | Ardeidae | -92% |
| Great Egret | Ardeidae | -83% |
| Green Heron | Ardeidae | -72% |
| Black-crowned Night Heron | Ardeidae | -60% |
| Least Bittern | Ardeidae | -56% |
| American Coot | Rallidae | -31% |
| Western Grebe | Podicipedidae | -11% |
| Double-crested Cormorant | Phalacrocoracidae | -7% |
| Virginia Rail | Rallidae | +12% |
| Snowy Egret | Ardeidae | +14% |
| Pied-billed Grebe | Podicipedidae | +86% |
| Ridgway's Rail | Rallidae | +239% |
| Great Blue Heron | Ardeidae | +241% |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.