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

Western Tanager Population Trend in Utah

All statesGeneralists

Western Tanager in Utah has surged: up 135% on the route-weighted index since 1970.

+135%Since 1970
84Routes In State
55Years

Notable Western Tanager Trends in Utah

long arc increasecomputed index

Western Tanager has surged in Utah: up 134% on the route-weighted index since 1970.

Western Tanager Population Forecast in Utah

If the recent trend holds, Western Tanager in Utah is projected to rise about 28% by 2029 — from 3.6 in 2024 to a central estimate of 4.6 (95% range 3.3–5.9). A 5-year backtest shows a typical error of ±30%, with 100% of held-out values landing inside the 95% band.

+28%Change by 2029
4.6Projected 2029 index
3.3–5.995% range
±30%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
20254.33.05.7
20264.43.15.7
20274.53.15.8
20284.53.25.8
20294.63.35.9

Western Tanager Survey Routes in Utah

Routes recording Western Tanager in Utah.
Dixie Nf2920241993
Ferron2620222000
Red Spur Mtn.2620231997
Grizzly Rdge2020241986
Gooseberry1920241994
Uintah Nf1719941987
Fish Lake Nf1720241992
Heber Mtn.1620241996
Beck1519871976
Woodruff1520242002
Navajo Lake1420241968
Richfield1420191994
Beck 21420181990
La Sal 31320242007
Fayette1220211992
Lost Cr. Res1220181995
Bryce Canyon1120241990
La Sal1020001994
Beaver920241968
Alton 2920242021
Logan Canyon820191997
Soapstone720241992
Main Canyon620241987
La Sal 2620062003
Wasatch Nf520241988

Western Tanager Population Trend in Other States

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