Species · New Hampshire · BBS 2025 Release · 1966–2024
Yellow-bellied Flycatcher Population Trend in New Hampshire
Yellow-bellied Flycatcher in New Hampshire has collapsed: down 82% on the route-weighted index since 1968.
-82%Since 1968
13Routes In State
48Years
Notable Yellow-bellied Flycatcher Trends in New Hampshire
long arc declinecomputed index
Yellow-bellied Flycatcher has collapsed in New Hampshire: down 82% on the route-weighted index since 1968.
Yellow-bellied Flycatcher Population Forecast in New Hampshire
If the recent trend holds, Yellow-bellied Flycatcher in New Hampshire is projected to fall about 91% by 2029 — from 0.09 in 2024 to a central estimate of 0.01 (95% range 0.00–0.25). A 5-year backtest shows a typical error of ±41.6%, with 100% of held-out values landing inside the 95% band.
-91%Change by 2029
0.01Projected 2029 index
0.00–0.2595% range
±41.6%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.03 | 0.00 | 0.28 |
| 2026 | 0.02 | 0.00 | 0.27 |
| 2027 | 0.02 | 0.00 | 0.27 |
| 2028 | 0.01 | 0.00 | 0.26 |
| 2029 | 0.01 | 0.00 | 0.25 |
Yellow-bellied Flycatcher Survey Routes in New Hampshire
| Stratford | 2 | 1972 | 1966 |
| Dixville Notch 2 | 2 | 2024 | 2024 |
| Brentwood | 1 | 1981 | 1981 |
| Hopkinton | 1 | 1968 | 1968 |
| Strafford | 1 | 2023 | 1968 |
| Wilmot | 1 | 1978 | 1977 |
| Mt Chocorua | 1 | 2021 | 1968 |
| Jefferson Hl | 1 | 2023 | 1971 |
| Franconia | 1 | 2014 | 1966 |
| Milan | 1 | 2019 | 1966 |
| Dixvil Notch | 1 | 2013 | 1966 |
| Clarksville | 1 | 2016 | 1966 |
| Jeffers Ntch | 1 | 2014 | 1993 |
Yellow-bellied Flycatcher Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.