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

Barred Owl In Northern Pacific Rainforest

All regionsNorthern Pacific RainforestGeneralists

Barred Owl in Northern Pacific Rainforest has surged: up 379% on the route-weighted index since 1998.

+379%Since 1998TrendPercent 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 →
33Routes 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 →
24YearsYears 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 →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Barred Owl has surged in Northern Pacific Rainforest: up 379% on the route-weighted index since 1998.

Barred Owl In Northern Pacific Rainforest Population Forecast

If the recent trend holds, Barred Owl in Northern Pacific Rainforest is projected to rise about 12% by 2029 — from 0.07 in 2024 to a central estimate of 0.07 (95% range 0.04–0.11). A 5-year backtest shows a typical error of ±45.3%, with 60% of held-out values landing inside the 95% band.

+12%Change by 2029TrendPercent 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 →
0.07Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.04–0.1195% 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 →
±45.3%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, Barred Owl in Northern Pacific Rainforest is projected to rise about 12% by 2029 — from 0.07 in 2024 to a central estimate of 0.07 (95% range 0.04–0.11). A 5-year backtest shows a typical error of ±45.3%, with 60% of held-out values landing inside the 95% band.19932029
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 →
20250.070.030.10
20260.070.040.10
20270.070.040.10
20280.070.040.11
20290.070.040.11

Routes In Northern Pacific Rainforest

Routes recording Barred Owl 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 →
Trask SummitOREGON22019
Harlan 2OREGON22017
MolallaOREGON22022
Mt St HelensWASHINGTON22024
KetchikanALASKA11998
ZaremboALASKA12022
HolmesCALIFORNIA12024
KorbelCALIFORNIA12017
ShellrockOREGON12019
SaladoOREGON12013
Blue RiverOREGON12023
Warner Mtn.OREGON12024
Myrtle GroveOREGON12022
LoraneOREGON12022
SelmaOREGON12023
FisherOREGON12010
Riley PeakOREGON12016
SantiamOREGON12009
KamilcheWASHINGTON12019
CougarWASHINGTON12023
South ElmaWASHINGTON12018
PackwoodWASHINGTON12023
Cedar FallsWASHINGTON12012
RaymondWASHINGTON12021
Mt RainierWASHINGTON12014

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