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

Ring-necked Pheasant Population Trend in Colorado

All statesGrassland birds

Ring-necked Pheasant in Colorado has collapsed: down 95% on the route-weighted index since 1970.

-95%Since 1970
72Routes In State
56Years

Notable Ring-necked Pheasant Trends in Colorado

long arc declinecomputed index

Ring-necked Pheasant has collapsed in Colorado: down 95% on the route-weighted index since 1970.

Ring-necked Pheasant Population Forecast in Colorado

If the recent trend holds, Ring-necked Pheasant in Colorado is projected to fall about 100% by 2029 — from 0.89 in 2024 to a central estimate of 0.00 (95% range 0.00–8.4). A 5-year backtest shows a typical error of ±242.9%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–8.495% range
±242.9%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
20250.000.008.4
20260.000.008.4
20270.000.008.4
20280.000.008.4
20290.000.008.4

Ring-necked Pheasant Survey Routes in Colorado

Routes recording Ring-necked Pheasant in Colorado.
Julesburg3720211998
Amherst3020241992
Waverly2420191988
Cheyenne1520241990
Fruita1320071988
Bethune1020191989
Pinneo720191973
Abarr720241968
Lamar620241973
Burlington620242003
Dolores519851968
Blanca519861985
Wildhorse L520241988
Stoneham520191992
Doyle Bridge519971992
Two Buttes420151973
Campo420181988
Flagler420241997
Briggsdale320021968
Kiowa319711971
Fort Morgan320241996
Ellicott319971994
Karval320161996
Edler320241992
Fleming220241968

Ring-necked Pheasant Population Trend in Other States

alaskaarizonacaliforniaconnecticutdelawareidahoillinoisindianaiowakansasmainemarylandmassachusettsmichiganminnesotamissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-dakotatexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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