Guild · Maine · BBS 2025 Release · 1966–2024
Forest Birds In Maine
51 species in this guild. As a group they are +0% since 1968.
Guild Signals
No notable trend signals for forest birds in Maine. See the full index history below.
Forecast
If the recent trend holds, Forest birds in Maine is projected to fall about 12% by 2029 — from 5.2 in 2024 to a central estimate of 4.6 (95% range 3.4–5.8). A 5-year backtest shows a typical error of ±7.9%, with 100% of held-out values landing inside the 95% band.
-12%Change by 2029
4.6Projected 2029 index
3.4–5.895% range
±7.9%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 4.7 | 3.4 | 5.9 |
| 2026 | 4.6 | 3.4 | 5.9 |
| 2027 | 4.6 | 3.4 | 5.9 |
| 2028 | 4.6 | 3.4 | 5.9 |
| 2029 | 4.6 | 3.4 | 5.8 |
Member Species In Maine
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.