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Species · Utah · BBS 2025 Release · 1966–2024

Virginia's Warbler Population Trend in Utah

All statesForest birds

Virginia's Warbler in Utah has collapsed: down 78% on the route-weighted index since 1988.

-78%Since 1988
40Routes In State
38Years

Notable Virginia's Warbler Trends in Utah

long arc declinecomputed index

Virginia's Warbler has collapsed in Utah: down 78% on the route-weighted index since 1988.

Virginia's Warbler Population Forecast in Utah

If the recent trend holds, Virginia's Warbler in Utah is projected to fall about 100% by 2029 — from 0.42 in 2024 to a central estimate of 0.00 (95% range 0.00–1.4). A 5-year backtest shows a typical error of ±109.1%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–1.495% range
±109.1%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
20250.040.001.4
20260.020.001.4
20270.000.001.4
20280.000.001.4
20290.000.001.4

Virginia's Warbler Survey Routes in Utah

Routes recording Virginia's Warbler in Utah.
Beck 2920181990
Book Ridge520242003
Saleratus Cr420001995
Beaver420241992
La Sal 3420242007
Main Canyon420242004
La Sal 2320062003
Bryce Canyon320241996
Crawford Mts320232023
Skyline Driv320152012
Alton320111997
Lost Cr. Res220151995
Navajo Lake220241987
Hite220071993
Fayette220211994
Gooseberry220241996
Shivwitz220111994
Ant Flat-Ogden Can220221994
Uintah Nf219941994
Fish Lake Nf220182018
Moquith Mtn220021987
Moon Lake 2120232013
Altonah120071968
Grizzly Rdge120222022
Oak City120231987

Virginia's Warbler Population Trend in Other States

arizonacaliforniacoloradoidahonevadanew-mexicosouth-dakotawyoming

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