Species · Virginia · BBS 2025 Release · 1966–2024
Boat-tailed Grackle Population Trend in Virginia
Boat-tailed Grackle in Virginia has fallen sharply: down 64% on the route-weighted index since 1980.
-64%Since 1980
7Routes In State
33Years
Notable Boat-tailed Grackle Trends in Virginia
long arc declinecomputed index
Boat-tailed Grackle has fallen sharply in Virginia: down 64% on the route-weighted index since 1980.
Boat-tailed Grackle Population Forecast in Virginia
If the recent trend holds, Boat-tailed Grackle in Virginia is projected to stay roughly flat through 2029, near 0.74 (95% range 0.00–6.9). A 5-year backtest shows a typical error of ±3765.8%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2029
0.74Projected 2029 index
0.00–6.995% range
±3765.8%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.82 | 0.00 | 6.9 |
| 2026 | 0.80 | 0.00 | 6.9 |
| 2027 | 0.78 | 0.00 | 6.9 |
| 2028 | 0.76 | 0.00 | 6.9 |
| 2029 | 0.74 | 0.00 | 6.9 |
Boat-tailed Grackle Survey Routes in Virginia
| Quinby | 65 | 2012 | 1968 |
| Pungo | 3 | 2013 | 1987 |
| Cornland | 2 | 1983 | 1982 |
| White Stone | 2 | 2017 | 1980 |
| Chincoteag W | 1 | 2024 | 1992 |
| Cape Charles | 1 | 2011 | 1993 |
| Sharps | 1 | 2001 | 2001 |
Boat-tailed Grackle Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.