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

Gray Vireo In Chihuahuan Desert

All regionsChihuahuan DesertForest birds

Gray Vireo in Chihuahuan Desert has surged: up 148% on the route-weighted index since 1994.

+148%Since 1994
13Routes In Region
32Years

Notable Signals

long arc increasecomputed index

Gray Vireo has surged in Chihuahuan Desert: up 148% on the route-weighted index since 1994.

Forecast

If the recent trend holds, Gray Vireo in Chihuahuan Desert is projected to fall about 36% by 2029 — from 0.28 in 2024 to a central estimate of 0.18 (95% range 0.01–0.34). A 5-year backtest shows a typical error of ±101.6%, with 100% of held-out values landing inside the 95% band.

-36%Change by 2029
0.18Projected 2029 index
0.01–0.3495% range
±101.6%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
20250.170.010.34
20260.170.010.34
20270.180.010.34
20280.180.010.34
20290.180.010.34

Routes In Chihuahuan Desert

Routes recording Gray Vireo in Chihuahuan Desert.
Devils R CynTEXAS32024
ComstockTEXAS21996
PumpvilleTEXAS22024
Capitan Mtn.NEW-MEXICO12016
PinonNEW-MEXICO12024
QueenNEW-MEXICO12021
EscondidaNEW-MEXICO12022
LongfellowTEXAS12023
CastolonTEXAS12024
Ft. StocktonTEXAS12004
ToyahvaleTEXAS12006
MarfaTEXAS12024
Chisos BasinTEXAS12008

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