Species · Washington · BBS 2025 Release · 1966–2024
Rhinoceros Auklet Population Trend in Washington
Rhinoceros Auklet in Washington has fallen sharply: down 59% on the route-weighted index since 1976.
-59%Since 1976
5Routes In State
28Years
Notable Rhinoceros Auklet Trends in Washington
long arc declinecomputed index
Rhinoceros Auklet has fallen sharply in Washington: down 59% on the route-weighted index since 1976.
Rhinoceros Auklet Population Forecast in Washington
If the recent trend holds, Rhinoceros Auklet in Washington is projected to stay roughly flat through 2020, near 0.00 (95% range 0.00–2.0). A 5-year backtest shows a typical error of ±2668.4%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2020
0.00Projected 2020 index
0.00–2.095% range
±2668.4%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2016 | 0.00 | 0.00 | 2.0 |
| 2017 | 0.00 | 0.00 | 2.0 |
| 2018 | 0.00 | 0.00 | 2.0 |
| 2019 | 0.00 | 0.00 | 2.0 |
| 2020 | 0.00 | 0.00 | 2.0 |
Rhinoceros Auklet Survey Routes in Washington
| Ozette | 7 | 1995 | 1974 |
| Taholah | 3 | 1976 | 1976 |
| Port Angeles | 1 | 2014 | 1972 |
| Warm Beach | 1 | 2001 | 1988 |
| Mukilteo | 1 | 2015 | 2015 |
Rhinoceros Auklet Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.