Species · BCR 4 · BBS 2025 Release · 1966–2024
Northern Pintail In BCR 4
Northern Pintail in BCR 4 has fallen sharply: down 61% on the route-weighted index since 1983.
-61%Since 1983
39Routes In Region
40Years
Notable Signals
long arc declinecomputed index
Northern Pintail has fallen sharply in BCR 4: down 61% on the route-weighted index since 1983.
Forecast
If the recent trend holds, Northern Pintail in BCR 4 is projected to fall about 100% by 2029 — from 0.50 in 2024 to a central estimate of 0.00 (95% range 0.00–0.94). A 5-year backtest shows a typical error of ±119.6%, with 100% of held-out values landing inside the 95% band.
-100%Change by 2029
0.00Projected 2029 index
0.00–0.9495% range
±119.6%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.05 | 0.00 | 0.99 |
| 2026 | 0.03 | 0.00 | 0.97 |
| 2027 | 0.01 | 0.00 | 0.95 |
| 2028 | 0.00 | 0.00 | 0.94 |
| 2029 | 0.00 | 0.00 | 0.94 |
Routes In BCR 4
| Nicholai Sl | ALASKA | 11 | 2024 |
| Kachemak | ALASKA | 10 | 1998 |
| Paxson Lake | ALASKA | 10 | 1995 |
| Ft. Richrdsn | ALASKA | 7 | 2003 |
| Nebesna | ALASKA | 6 | 1975 |
| Bear Creek | ALASKA | 6 | 1991 |
| Monahan | ALASKA | 5 | 2013 |
| Kalifonsky | ALASKA | 5 | 2022 |
| Murphy Dome | ALASKA | 4 | 2006 |
| Pinoche Tral (Short) | ALASKA | 4 | 1984 |
| Maclaren | ALASKA | 3 | 2022 |
| Toklat | ALASKA | 3 | 2018 |
| Chena Hot Spring 2 | ALASKA | 3 | 1999 |
| Chistochina | ALASKA | 2 | 2021 |
| Homer | ALASKA | 2 | 1982 |
| Hather Creek | ALASKA | 2 | 2024 |
| Koyukuk Riv. | ALASKA | 2 | 1995 |
| Mud River | ALASKA | 2 | 2012 |
| Porcupine R. | ALASKA | 2 | 2001 |
| Nabesna Road | ALASKA | 2 | 1989 |
| Slana | ALASKA | 1 | 2024 |
| Northway | ALASKA | 1 | 1994 |
| Cantwell | ALASKA | 1 | 2004 |
| L Salcha | ALASKA | 1 | 1989 |
| Kenny Lake | ALASKA | 1 | 2024 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.