Species · BCR 2 · BBS 2025 Release · 1966–2024
Black Oystercatcher In BCR 2
Black Oystercatcher in BCR 2 has collapsed: down 80% on the route-weighted index since 1988.
-80%Since 1988
3Routes In Region
28Years
Notable Signals
long arc declinecomputed index
Black Oystercatcher has collapsed in BCR 2: down 80% on the route-weighted index since 1988.
Forecast
If the recent trend holds, Black Oystercatcher in BCR 2 is projected to fall about 100% by 2029 — from 0.33 in 2024 to a central estimate of 0.00 (95% range 0.00–3.1). A 5-year backtest shows a typical error of ±162.3%, with 100% of held-out values landing inside the 95% band.
-100%Change by 2029
0.00Projected 2029 index
0.00–3.195% range
±162.3%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.00 | 0.00 | 3.1 |
| 2026 | 0.00 | 0.00 | 3.1 |
| 2027 | 0.00 | 0.00 | 3.1 |
| 2028 | 0.00 | 0.00 | 3.1 |
| 2029 | 0.00 | 0.00 | 3.1 |
Routes In BCR 2
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.