Species · Maine · BBS 2025 Release · 1966–2024
Red Crossbill Population Trend in Maine
Red Crossbill in Maine has surged: up 243% on the route-weighted index since 1975.
+243%Since 1975
21Routes In State
28Years
Notable Red Crossbill Trends in Maine
long arc increasecomputed index
Red Crossbill has surged in Maine: up 243% on the route-weighted index since 1975.
Red Crossbill Population Forecast in Maine
If the recent trend holds, Red Crossbill in Maine is projected to fall about 30% by 2029 — from 0.58 in 2024 to a central estimate of 0.41 (95% range 0.01–0.81). A 5-year backtest shows a typical error of ±59%, with 40% of held-out values landing inside the 95% band.
-30%Change by 2029
0.41Projected 2029 index
0.01–0.8195% range
±59%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.38 | 0.00 | 0.78 |
| 2026 | 0.38 | 0.00 | 0.78 |
| 2027 | 0.39 | 0.00 | 0.79 |
| 2028 | 0.40 | 0.00 | 0.80 |
| 2029 | 0.41 | 0.01 | 0.81 |
Red Crossbill Survey Routes in Maine
| Stacyville | 16 | 2023 | 2023 |
| Charleston | 7 | 2017 | 2017 |
| Grnd Lk Strm | 6 | 1992 | 1992 |
| Priestly Br. | 6 | 2000 | 1998 |
| Bethel | 5 | 2010 | 2010 |
| Reeds | 4 | 2024 | 2024 |
| Brownfield 2 | 4 | 2024 | 2024 |
| Wilson Mills | 3 | 2024 | 1991 |
| Nesowadnehun | 3 | 2019 | 2016 |
| Medway | 2 | 2018 | 1991 |
| Andover | 2 | 2018 | 2018 |
| Manchester | 1 | 1990 | 1990 |
| East Troy | 1 | 1996 | 1996 |
| Heron Lake | 1 | 1988 | 1988 |
| Brooks | 1 | 1996 | 1996 |
| Eastbrook | 1 | 2023 | 1989 |
| Cooper | 1 | 2007 | 1975 |
| Carrabassett | 1 | 2003 | 1983 |
| Forest Sta | 1 | 1967 | 1967 |
| Ludlow | 1 | 1974 | 1974 |
| Horse Mtn | 1 | 1986 | 1986 |
Red Crossbill Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.