BirdAnalyst
Species · BCR 10 · BBS 2026 Release · 1966–2025

Mountain Quail In Northern Rockies

All regionsNorthern RockiesGame birds

Mountain Quail in Northern Rockies has increased: up 35% on the route-weighted index since 1997.

+35%Since 1997TrendPercent 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 →
12Routes 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 →

No notable trend signals for Mountain Quail in Northern Rockies. See the full index history below.

Mountain Quail In Northern Rockies Population Forecast

If the recent trend holds, Mountain Quail in Northern Rockies is projected to fall about 67% by 2030 — from 0.10 in 2025 to a central estimate of 0.03 (95% range 0.00–0.09). A 5-year backtest shows a typical error of ±72.5%, with 80% of held-out values landing inside the 95% band.

-67%Change by 2030TrendPercent 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 →
0.03Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.0995% 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 →
±72.5%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, Mountain Quail in Northern Rockies is projected to fall about 67% by 2030 — from 0.10 in 2025 to a central estimate of 0.03 (95% range 0.00–0.09). A 5-year backtest shows a typical error of ±72.5%, with 80% of held-out values landing inside the 95% band.19742030
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 →
20260.030.000.09
20270.030.000.09
20280.030.000.09
20290.030.000.09
20300.030.000.09

Routes In Northern Rockies

Routes recording Mountain Quail in Northern Rockies.
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 →
TwickenhamOREGON92016
Hash RockOREGON62025
MonumentOREGON62025
OchocoOREGON32015
CloverlandWASHINGTON22024
AlbeeOREGON12025
LogdellOREGON12025
WickiupOREGON12025
Eagle RockOREGON11979
MadrasOREGON12006
UnityOREGON12022
Spring LakeWASHINGTON12018

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.