BirdAnalyst
Species · Colorado · BBS 2025 Release · 1966–2024

Canada Jay Population Trend in Colorado

All statesGeneralists

Canada Jay in Colorado has increased: up 47% on the route-weighted index since 1971.

+47%Since 1971
43Routes In State
53Years

Notable Canada Jay Trends in Colorado

No notable trend signals for Canada Jay in Colorado. See the full index history below.

Canada Jay Population Forecast in Colorado

If the recent trend holds, Canada Jay in Colorado is projected to rise about 67% by 2029 — from 0.21 in 2024 to a central estimate of 0.34 (95% range 0.10–0.58). A 5-year backtest shows a typical error of ±74.6%, with 100% of held-out values landing inside the 95% band.

+67%Change by 2029
0.34Projected 2029 index
0.10–0.5895% range
±74.6%Backtest error
19682029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20250.330.090.57
20260.330.100.57
20270.340.100.58
20280.340.100.58
20290.340.100.58

Canada Jay Survey Routes in Colorado

Routes recording Canada Jay in Colorado.
Buffalo Park1420231992
Mount Evans520241996
Pinos Creek519901988
South Fork520241994
Weston Pass 2420222003
Red Cliff320241989
Guanella Pas320192002
Pinon320241992
Cochetopa Pass320231998
Maybell219711971
Parlin220221968
Rio Grnds Rs220001995
Summitville220121991
Lost Lake220181993
Castleton220241991
Steamboat L.220171997
Guffey220171998
Dolores Riv220052005
Ragged Mtn.220092009
Marshall Pas220181995
Stillwater Pass 2220172011
Deadman Rd.220241995
Flattops220191992
Thomasville220181992
Tincup220211992

Canada Jay Population Trend in Other States

alaskaarizonacaliforniaidahomainemichiganminnesotamontananew-hampshirenew-yorkoregonsouth-dakotautahvermontwashingtonwisconsinwyoming

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