BirdAnalyst
Species · BCR 35 · BBS 2025 Release · 1966–2024

Bell's Vireo In Chihuahuan Desert

All regionsChihuahuan DesertForest birds

Bell's Vireo in Chihuahuan Desert has surged: up 210% on the route-weighted index since 1969.

+210%Since 1969
40Routes In Region
57Years

Notable Signals

long arc increasecomputed index

Bell's Vireo has surged in Chihuahuan Desert: up 210% on the route-weighted index since 1969.

Forecast

If the recent trend holds, Bell's Vireo in Chihuahuan Desert is projected to rise about 32% by 2029 — from 5.4 in 2024 to a central estimate of 7.1 (95% range 5.2–9.1). A 5-year backtest shows a typical error of ±16.1%, with 100% of held-out values landing inside the 95% band.

+32%Change by 2029
7.1Projected 2029 index
5.2–9.195% range
±16.1%Backtest error
19672029
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
20256.74.88.7
20266.84.98.8
20276.95.08.9
20287.05.19.0
20297.15.29.1

Routes In Chihuahuan Desert

Routes recording Bell's Vireo in Chihuahuan Desert.
LongfellowTEXAS392024
OzonaTEXAS372022
ComstockTEXAS352023
Devils R CynTEXAS252024
Red RockNEW-MEXICO202024
PumpvilleTEXAS192024
Dove Mtn.TEXAS162006
Casa PiedraTEXAS132023
Quitman Cyn.TEXAS132009
LangtryTEXAS112000
Bear MtnTEXAS102024
Coyanda DrawTEXAS92024
AltudaTEXAS72023
ToyahvaleTEXAS62024
ShafterTEXAS51985
CastolonTEXAS52024
Ft. DavisTEXAS52023
RodeoNEW-MEXICO42024
LaborcitaNEW-MEXICO42019
MarathonTEXAS42023
Hatchet PeakNEW-MEXICO32024
ColumbusNEW-MEXICO32024
Delaware CrkTEXAS32015
Ft. StocktonTEXAS32024
Sierra BlancTEXAS32024

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