Species · Alabama · BBS 2025 Release · 1966–2024
House Sparrow Population Trend in Alabama
House Sparrow in Alabama has collapsed: down 95% on the route-weighted index since 1968.
-95%Since 1968
97Routes In State
58Years
Notable House Sparrow Trends in Alabama
long arc declinecomputed index
House Sparrow has collapsed in Alabama: down 95% on the route-weighted index since 1968.
House Sparrow Population Forecast in Alabama
If the recent trend holds, House Sparrow in Alabama is projected to fall about 100% by 2029 — from 2.8 in 2024 to a central estimate of 0.00 (95% range 0.00–17). A 5-year backtest shows a typical error of ±684.5%, with 20% of held-out values landing inside the 95% band.
-100%Change by 2029
0.00Projected 2029 index
0.00–1795% range
±684.5%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.00 | 0.00 | 17 |
| 2026 | 0.00 | 0.00 | 17 |
| 2027 | 0.00 | 0.00 | 17 |
| 2028 | 0.00 | 0.00 | 17 |
| 2029 | 0.00 | 0.00 | 17 |
House Sparrow Survey Routes in Alabama
| Birmingham | 192 | 1995 | 1969 |
| Summitt | 52 | 1981 | 1966 |
| Foley | 47 | 1984 | 1966 |
| Hillsboro | 35 | 1996 | 1966 |
| Alabama Pt | 32 | 2003 | 1966 |
| Guntersville | 27 | 2024 | 1980 |
| Rock Chapel | 27 | 2024 | 2017 |
| Dawson | 25 | 1998 | 1966 |
| Dearmanville | 23 | 1983 | 1966 |
| Lakeview | 21 | 2024 | 1999 |
| Alabama Pt 2 | 20 | 2019 | 2004 |
| Carter Grove | 11 | 2023 | 2002 |
| Escatawpa | 10 | 1989 | 1983 |
| Greensport | 9 | 2024 | 1966 |
| Vernon | 9 | 2016 | 1996 |
| Swaim | 8 | 2024 | 1966 |
| Warrior Std | 7 | 2006 | 1966 |
| Newton | 7 | 2024 | 1966 |
| Calebee | 7 | 2013 | 1994 |
| Elberta | 7 | 2021 | 1986 |
| Oneonta | 7 | 2023 | 1996 |
| Millerville | 6 | 2002 | 1966 |
| Grove Hill | 6 | 2023 | 1983 |
| Stevenson | 6 | 2024 | 1996 |
| Wedgeworth | 5 | 2021 | 1979 |
House Sparrow Population Trend in Other States
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Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.