Species · Massachusetts · BBS 2025 Release · 1966–2024
White-throated Sparrow Population Trend in Massachusetts
White-throated Sparrow in Massachusetts has collapsed: down 98% on the route-weighted index since 1968.
-98%Since 1968
22Routes In State
56Years
Notable White-throated Sparrow Trends in Massachusetts
long arc declinecomputed index
White-throated Sparrow has collapsed in Massachusetts: down 98% on the route-weighted index since 1968.
White-throated Sparrow Population Forecast in Massachusetts
If the recent trend holds, White-throated Sparrow in Massachusetts is projected to fall about 100% by 2029 — from 0.07 in 2024 to a central estimate of 0.00 (95% range 0.00–1.4). A 5-year backtest shows a typical error of ±1018.6%, with 100% of held-out values landing inside the 95% band.
-100%Change by 2029
0.00Projected 2029 index
0.00–1.495% range
±1018.6%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.00 | 0.00 | 1.4 |
| 2026 | 0.00 | 0.00 | 1.4 |
| 2027 | 0.00 | 0.00 | 1.4 |
| 2028 | 0.00 | 0.00 | 1.4 |
| 2029 | 0.00 | 0.00 | 1.4 |
White-throated Sparrow Survey Routes in Massachusetts
| Littleton | 3 | 2006 | 1968 |
| E Pepperell | 3 | 1986 | 1966 |
| Newburyport | 2 | 1983 | 1967 |
| Princeton | 2 | 1976 | 1969 |
| Chesterfield | 2 | 2018 | 1967 |
| Sheffield | 2 | 1997 | 1970 |
| Marion | 1 | 1969 | 1969 |
| Ware River | 1 | 2010 | 1993 |
| Cape Cod Ns | 1 | 1991 | 1991 |
| Brockton | 1 | 1972 | 1972 |
| Maynard | 1 | 1994 | 1969 |
| N Oxford | 1 | 1972 | 1970 |
| Belchertown | 1 | 1997 | 1967 |
| Warren | 1 | 1980 | 1968 |
| S Barre | 1 | 2005 | 1968 |
| N Orange | 1 | 2024 | 1968 |
| Cummington | 1 | 2014 | 1968 |
| Cheshire | 1 | 1993 | 1969 |
| Pittsfield | 1 | 2006 | 1967 |
| Holden | 1 | 1990 | 1977 |
| Cummington 2 | 1 | 2023 | 2015 |
| Hancock | 1 | 2012 | 1997 |
White-throated Sparrow Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.