Species · Massachusetts · BBS 2025 Release · 1966–2024
Eastern Whip-poor-will Population Trend in Massachusetts
Eastern Whip-poor-will in Massachusetts has collapsed: down 81% on the route-weighted index since 1968.
-81%Since 1968
18Routes In State
38Years
Notable Eastern Whip-poor-will Trends in Massachusetts
long arc declinecomputed index
Eastern Whip-poor-will has collapsed in Massachusetts: down 81% on the route-weighted index since 1968.
Eastern Whip-poor-will Population Forecast in Massachusetts
If the recent trend holds, Eastern Whip-poor-will in Massachusetts is projected to fall about 100% by 2029 — from 0.13 in 2024 to a central estimate of 0.00 (95% range 0.00–0.59). A 5-year backtest shows a typical error of ±311.3%, with 100% of held-out values landing inside the 95% band.
-100%Change by 2029
0.00Projected 2029 index
0.00–0.5995% range
±311.3%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.00 | 0.00 | 0.59 |
| 2026 | 0.00 | 0.00 | 0.59 |
| 2027 | 0.00 | 0.00 | 0.59 |
| 2028 | 0.00 | 0.00 | 0.59 |
| 2029 | 0.00 | 0.00 | 0.59 |
Eastern Whip-poor-will Survey Routes in Massachusetts
| Wellfleet | 4 | 1991 | 1966 |
| Chilmark | 3 | 1973 | 1971 |
| Belchertown | 2 | 2024 | 1969 |
| E Dennis | 1 | 1975 | 1975 |
| Marion | 1 | 1978 | 1966 |
| Prattville | 1 | 1968 | 1968 |
| Gay Head | 1 | 2023 | 2016 |
| Cape Cod Ns | 1 | 1989 | 1989 |
| Maynard | 1 | 1970 | 1967 |
| Littleton | 1 | 1969 | 1969 |
| N Oxford | 1 | 1974 | 1969 |
| Mansfield | 1 | 1995 | 1987 |
| Wellfleet 2 | 1 | 2023 | 2023 |
| Warren | 1 | 1987 | 1969 |
| S Barre | 1 | 1984 | 1977 |
| N Orange | 1 | 1980 | 1968 |
| Holden | 1 | 2012 | 1982 |
| Sheffield | 1 | 1974 | 1974 |
Eastern Whip-poor-will Population Trend in Other States
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Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.