Guild · Illinois · BBS 2025 Release · 1966–2024

Game Birds In Illinois

4 species in this guild. As a group they are -84% since 1968.

Guild Signals

guild collapsecomputed index

Game birds as a group have collapsed in Illinois, down 84% since 1968.

Forecast

If the recent trend holds, Game birds in Illinois is projected to fall about 100% by 2029 — from 3.1 in 2024 to a central estimate of 0.00 (95% range 0.00–8.4). A 5-year backtest shows a typical error of ±108.8%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029

0.00Projected 2029 index

0.00–8.495% range

±108.8%Backtest error

Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.

Year	Projected index	95% low	95% high
2025	0.00	0.00	8.4
2026	0.00	0.00	8.4
2027	0.00	0.00	8.4
2028	0.00	0.00	8.4
2029	0.00	0.00	8.4

Member Species In Illinois

Game birds species in Illinois.

Gray Partridge	Phasianidae	-96%
Ring-necked Pheasant	Phasianidae	-80%
Northern Bobwhite	Odontophoridae	-80%
Wild Turkey	Phasianidae	25×

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