BirdAnalyst
Species · BCR 5 · BBS 2025 Release · 1966–2024

Rhinoceros Auklet In Northern Pacific Rainforest

All regionsNorthern Pacific RainforestGeneralists

Rhinoceros Auklet in Northern Pacific Rainforest has edged down: down 19% on the route-weighted index since 1976.

-19%Since 1976TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
6Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
29YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

No notable trend signals for Rhinoceros Auklet in Northern Pacific Rainforest. See the full index history below.

Forecast

If the recent trend holds, Rhinoceros Auklet in Northern Pacific Rainforest is projected to stay roughly flat through 2020, near 0.00 (95% range 0.00–0.84). A 5-year backtest shows a typical error of ±985.7%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2020TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
0.00Projected 2020 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.8495% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±985.7%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Rhinoceros Auklet in Northern Pacific Rainforest is projected to stay roughly flat through 2020, near 0.00 (95% range 0.00–0.84). A 5-year backtest shows a typical error of ±985.7%, with 100% of held-out values landing inside the 95% band.19722020
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20160.000.000.84
20170.000.000.84
20180.000.000.84
20190.000.000.84
20200.000.000.84

Routes In Northern Pacific Rainforest

Routes recording Rhinoceros Auklet in Northern Pacific Rainforest.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
OzetteWASHINGTON71995
TaholahWASHINGTON31976
Fish RockCALIFORNIA21979
Port AngelesWASHINGTON12014
Warm BeachWASHINGTON12001
MukilteoWASHINGTON12015

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.