Species · New Hampshire · BBS 2025 Release · 1966–2024
Olive-sided Flycatcher Population Trend in New Hampshire
Olive-sided Flycatcher in New Hampshire has collapsed: down 90% on the route-weighted index since 1968.
-90%Since 1968
21Routes In State
49Years
Notable Olive-sided Flycatcher Trends in New Hampshire
long arc declinecomputed index
Olive-sided Flycatcher has collapsed in New Hampshire: down 90% on the route-weighted index since 1968.
Olive-sided Flycatcher Population Forecast in New Hampshire
If the recent trend holds, Olive-sided Flycatcher in New Hampshire is projected to stay roughly flat through 2028, near 0.00 (95% range 0.00–0.18). A 5-year backtest shows a typical error of ±200.7%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2028
0.00Projected 2028 index
0.00–0.1895% range
±200.7%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2024 | 0.00 | 0.00 | 0.18 |
| 2025 | 0.00 | 0.00 | 0.18 |
| 2026 | 0.00 | 0.00 | 0.18 |
| 2027 | 0.00 | 0.00 | 0.18 |
| 2028 | 0.00 | 0.00 | 0.18 |
Olive-sided Flycatcher Survey Routes in New Hampshire
| Milan | 2 | 1981 | 1966 |
| Brentwood | 1 | 1986 | 1968 |
| Fitzwilliam | 1 | 1966 | 1966 |
| Dover | 1 | 1970 | 1966 |
| Hopkinton | 1 | 1987 | 1971 |
| Epsom | 1 | 1971 | 1970 |
| Concord | 1 | 1976 | 1967 |
| Strafford | 1 | 1976 | 1976 |
| Wilmot | 1 | 2001 | 1973 |
| Mt Chocorua | 1 | 2021 | 1973 |
| Marlow | 1 | 1983 | 1975 |
| Lempster | 1 | 1985 | 1969 |
| Crawford Not | 1 | 1970 | 1966 |
| Jefferson Hl | 1 | 2016 | 1966 |
| Franconia | 1 | 2008 | 1966 |
| Stratford | 1 | 1983 | 1974 |
| Dixvil Notch | 1 | 2017 | 1966 |
| Clarksville | 1 | 2023 | 1967 |
| Glen | 1 | 2022 | 1975 |
| Jeffers Ntch | 1 | 2012 | 1995 |
| Dixville Notch 2 | 1 | 2019 | 2019 |
Olive-sided Flycatcher Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.