Species · Illinois · BBS 2025 Release · 1966–2024

Loggerhead Shrike Population Trend in Illinois

All states Generalists

Loggerhead Shrike in Illinois has collapsed: down 97% on the route-weighted index since 1968.

-97%Since 1968

66Routes In State

54Years

Notable Loggerhead Shrike Trends in Illinois

long arc declinecomputed index

Loggerhead Shrike has collapsed in Illinois: down 97% on the route-weighted index since 1968.

Loggerhead Shrike Population Forecast in Illinois

If the recent trend holds, Loggerhead Shrike in Illinois is projected to stay roughly flat through 2029, near 0.00 (95% range 0.00–0.30). A 5-year backtest shows a typical error of ±717%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029

0.00Projected 2029 index

0.00–0.3095% range

±717%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	0.30
2026	0.00	0.00	0.30
2027	0.00	0.00	0.30
2028	0.00	0.00	0.30
2029	0.00	0.00	0.30

Loggerhead Shrike Survey Routes in Illinois

Routes recording Loggerhead Shrike in Illinois.

Melrose	4	1986	1986
Chandlervill	3	1973	1973
Athensville	3	1982	1972
Mill Creek	2	1990	1989
Holcomb	2	1991	1971
Compton	2	1982	1972
Newark	2	1973	1973
Sherburnvill	2	1968	1968
Stillwell	2	1994	1977
Cameron	2	1994	1966
Monica	2	1997	1984
Mackinaw	2	1978	1978
Dailey	2	1968	1968
Pawnee	2	1985	1971
Kell	2	2013	2002
Fairland	2	1967	1967
Jamestown	2	2002	1967
Birds	2	1979	1976
Seneca	2	1995	1995
Karnak	2	2016	2001
Cave In Rock	2	2021	1997
Guilford	1	1990	1990
Atkinson	1	1993	1966
Putnam	1	1988	1988
Sheffield	1	2014	2014

Loggerhead Shrike Population Trend in Other States

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