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

Varied Bunting In Chihuahuan Desert

All regionsChihuahuan DesertGeneralists

Varied Bunting in Chihuahuan Desert has collapsed: down 76% on the route-weighted index since 1970.

-76%Since 1970
19Routes In Region
44Years

Notable Signals

long arc declinecomputed index

Varied Bunting has collapsed in Chihuahuan Desert: down 75% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Varied Bunting in Chihuahuan Desert is projected to stay roughly flat through 2029, near 0.21 (95% range 0.00–0.58). A 5-year backtest shows a typical error of ±215.9%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029
0.21Projected 2029 index
0.00–0.5895% range
±215.9%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
20250.220.000.59
20260.210.000.59
20270.210.000.58
20280.210.000.58
20290.210.000.58

Routes In Chihuahuan Desert

Routes recording Varied Bunting in Chihuahuan Desert.
PresidioTEXAS32015
LongfellowTEXAS22023
OzonaTEXAS22021
ToyahvaleTEXAS22019
Sierra BlancTEXAS22009
MarathonTEXAS22010
PumpvilleTEXAS22019
QueenNEW-MEXICO12016
Hot SpringsTEXAS12018
Black GapTEXAS12023
ShafterTEXAS11980
AltudaTEXAS12006
SlaughterTEXAS12014
Casa PiedraTEXAS12015
CastolonTEXAS12018
Devils R CynTEXAS12024
Quitman Cyn.TEXAS12009
Quitman Canyon 2TEXAS12010
Chisos BasinTEXAS12023

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