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

Loggerhead Shrike Population Trend in Utah

All statesGeneralists

Loggerhead Shrike in Utah has surged: up 105% on the route-weighted index since 1971.

+105%Since 1971
74Routes In State
49Years

Notable Loggerhead Shrike Trends in Utah

long arc increasecomputed index

Loggerhead Shrike has surged in Utah: up 105% on the route-weighted index since 1971.

Loggerhead Shrike Population Forecast in Utah

If the recent trend holds, Loggerhead Shrike in Utah is projected to fall about 29% by 2029 — from 1.6 in 2024 to a central estimate of 1.2 (95% range 0.61–1.7). A 5-year backtest shows a typical error of ±17.7%, with 80% of held-out values landing inside the 95% band.

-29%Change by 2029
1.2Projected 2029 index
0.61–1.795% range
±17.7%Backtest error
19692029
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
20251.10.581.7
20261.10.591.7
20271.20.601.7
20281.20.601.7
20291.20.611.7

Loggerhead Shrike Survey Routes in Utah

Routes recording Loggerhead Shrike in Utah.
Gandy2420151997
Snowville1820241999
Shivwitz1120241993
Jensen1120241992
Johnson Can920221988
Blanding820241987
Westwater620241998
Promontory520241969
Gilson Butte 2520182006
Leamington520171992
Lake Powell520091998
Canyonlands520241986
Cane Spr Des520111993
Stock Res420041986
Hanksville420241994
Tule Valley420121999
Escalante420241999
Wah Wah420151990
Willow Creek320241986
Hite320231992
Kelton319951992
Callao320241997
Jericho Junction320231997
Green River320091999
Peplin Mountain320241999

Loggerhead Shrike Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradofloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmichiganminnesotamississippimissourimontananebraskanevadanew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniasouth-carolinasouth-dakotatennesseetexasvermontvirginiawashingtonwest-virginiawisconsinwyoming

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