Species · BCR 2 · BBS 2025 Release · 1966–2024
Pelagic Cormorant In BCR 2
Pelagic Cormorant in BCR 2 has declined: down 45% on the route-weighted index since 1988.
-45%Since 1988
6Routes In Region
18Years
Notable Signals
No notable trend signals for Pelagic Cormorant in BCR 2. See the full index history below.
Forecast
If the recent trend holds, Pelagic Cormorant in BCR 2 is projected to rise about 58% by 2020 — from 0.11 in 2015 to a central estimate of 0.17 (95% range 0.00–0.64). A 5-year backtest shows a typical error of ±169.7%, with 60% of held-out values landing inside the 95% band.
+58%Change by 2020
0.17Projected 2020 index
0.00–0.6495% range
±169.7%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2016 | 0.20 | 0.00 | 0.66 |
| 2017 | 0.20 | 0.00 | 0.66 |
| 2018 | 0.19 | 0.00 | 0.65 |
| 2019 | 0.18 | 0.00 | 0.64 |
| 2020 | 0.17 | 0.00 | 0.64 |
Routes In BCR 2
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.