Species · New York · BBS 2025 Release · 1966–2024
Henslow's Sparrow Population Trend in New York
Henslow's Sparrow in New York has collapsed: down 82% on the route-weighted index since 1968.
-82%Since 1968
42Routes In State
36Years
Notable Henslow's Sparrow Trends in New York
long arc declinecomputed index
Henslow's Sparrow has collapsed in New York: down 82% on the route-weighted index since 1968.
Henslow's Sparrow Population Forecast in New York
If the recent trend holds, Henslow's Sparrow in New York is projected to stay roughly flat through 2011, near 0.00 (95% range 0.00–0.15). A 5-year backtest shows a typical error of ±544.3%, with 40% of held-out values landing inside the 95% band.
n/aChange by 2011
0.00Projected 2011 index
0.00–0.1595% range
±544.3%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2007 | 0.00 | 0.00 | 0.15 |
| 2008 | 0.00 | 0.00 | 0.15 |
| 2009 | 0.00 | 0.00 | 0.15 |
| 2010 | 0.00 | 0.00 | 0.15 |
| 2011 | 0.00 | 0.00 | 0.15 |
Henslow's Sparrow Survey Routes in New York
| Lisle | 7 | 2003 | 1967 |
| Watertown | 5 | 1973 | 1969 |
| Oneida | 4 | 1976 | 1968 |
| Number Four | 3 | 1969 | 1969 |
| Medusa | 2 | 1969 | 1969 |
| Trumansburg | 2 | 1994 | 1966 |
| Phillips Cr | 2 | 2006 | 1968 |
| Swain | 2 | 1983 | 1968 |
| Branchport | 2 | 1997 | 1967 |
| Sheridan | 2 | 1989 | 1966 |
| Pulaski | 2 | 1991 | 1968 |
| Somers | 1 | 1975 | 1975 |
| Durham | 1 | 1969 | 1969 |
| Laurens | 1 | 1981 | 1981 |
| Whitney Pt | 1 | 1972 | 1966 |
| Coventryvile | 1 | 1978 | 1969 |
| Corbettsvile | 1 | 1986 | 1969 |
| Oriskany Fls | 1 | 1977 | 1977 |
| E Newark | 1 | 1993 | 1992 |
| Romulus | 1 | 1993 | 1968 |
| Dryden | 1 | 1993 | 1966 |
| Macdougall | 1 | 1989 | 1972 |
| Vestal Ctr | 1 | 1999 | 1966 |
| Orleans | 1 | 1997 | 1979 |
| Rushville | 1 | 1970 | 1970 |
Henslow's Sparrow Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.