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

Western Screech-Owl In Northern Pacific Rainforest

All regionsNorthern Pacific RainforestGeneralists

Western Screech-Owl in Northern Pacific Rainforest has declined: down 30% on the route-weighted index since 1976.

-30%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 →
36Routes 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 →
34YearsYears 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 Western Screech-Owl in Northern Pacific Rainforest. See the full index history below.

Western Screech-Owl In Northern Pacific Rainforest Population Forecast

If the recent trend holds, Western Screech-Owl in Northern Pacific Rainforest is projected to stay roughly flat through 2028, near 0.01 (95% range 0.00–0.04). A 5-year backtest shows a typical error of ±52.9%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2028TrendPercent 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 →
0.01Projected 2028 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.0495% 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 →
±52.9%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, Western Screech-Owl in Northern Pacific Rainforest is projected to stay roughly flat through 2028, near 0.01 (95% range 0.00–0.04). A 5-year backtest shows a typical error of ±52.9%, with 100% of held-out values landing inside the 95% band.19722028
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 →
20240.010.000.04
20250.010.000.04
20260.010.000.04
20270.010.000.04
20280.010.000.04

Routes In Northern Pacific Rainforest

Routes recording Western Screech-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 →
Crescent CtyCALIFORNIA12005
HoneydewCALIFORNIA12013
HullvilleCALIFORNIA11996
Rio DellCALIFORNIA11982
Shasta LakeCALIFORNIA12000
NavarroCALIFORNIA12007
LongvaleCALIFORNIA12013
Offield MtnCALIFORNIA11980
AlderpointCALIFORNIA12009
KorbelCALIFORNIA12004
Burnt RanchCALIFORNIA12016
Hay ForkCALIFORNIA12003
Friday RidgeCALIFORNIA12022
GazelleCALIFORNIA11994
ShellrockOREGON11998
SaladoOREGON12006
UmpquaOREGON12003
WedderburnOREGON11972
Days CreekOREGON11978
DaytonOREGON11987
Nicolai Mtn.OREGON11999
Emigrant Lake 2OREGON12003
Trask SummitOREGON11993
Blue RiverOREGON12012
CoquilleOREGON12013

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