Species · BCR 4 · BBS 2025 Release · 1966–2024
Greater Yellowlegs In BCR 4
Greater Yellowlegs in BCR 4 has fallen sharply: down 67% on the route-weighted index since 1982.
-67%Since 1982
30Routes In Region
44Years
Notable Signals
long arc declinecomputed index
Greater Yellowlegs has fallen sharply in BCR 4: down 67% on the route-weighted index since 1982.
Forecast
If the recent trend holds, Greater Yellowlegs in BCR 4 is projected to stay roughly flat through 2029, near 0.00 (95% range 0.00–0.90). A 5-year backtest shows a typical error of ±78.9%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2029
0.00Projected 2029 index
0.00–0.9095% range
±78.9%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.09 | 0.00 | 0.98 |
| 2026 | 0.06 | 0.00 | 0.96 |
| 2027 | 0.04 | 0.00 | 0.94 |
| 2028 | 0.02 | 0.00 | 0.91 |
| 2029 | 0.00 | 0.00 | 0.90 |
Routes In BCR 4
| Monahan | ALASKA | 12 | 1993 |
| Sourdough | ALASKA | 10 | 2018 |
| Paxson Lake | ALASKA | 8 | 1993 |
| Kalifonsky | ALASKA | 7 | 2023 |
| Mud River | ALASKA | 7 | 2004 |
| Hather Creek | ALASKA | 6 | 2004 |
| Chistochina | ALASKA | 3 | 2021 |
| Petersville | ALASKA | 3 | 2023 |
| Ft. Richrdsn | ALASKA | 3 | 2023 |
| Nebesna | ALASKA | 2 | 1975 |
| Northway | ALASKA | 2 | 2018 |
| Cantwell | ALASKA | 2 | 2005 |
| L Salcha | ALASKA | 2 | 1989 |
| Cohoe | ALASKA | 2 | 2023 |
| Seven Lakes | ALASKA | 2 | 2022 |
| Toklat | ALASKA | 1 | 1999 |
| Skilak Lake | ALASKA | 1 | 1985 |
| Homer | ALASKA | 1 | 1978 |
| Willow | ALASKA | 1 | 2023 |
| Hatcher Pass | ALASKA | 1 | 2012 |
| Swan Lake Rd | ALASKA | 1 | 2022 |
| Anchor River | ALASKA | 1 | 2021 |
| Lake Louise | ALASKA | 1 | 2011 |
| Kachemak | ALASKA | 1 | 2019 |
| Burma Road | ALASKA | 1 | 2024 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.