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

Bronzed Cowbird In Chihuahuan Desert

All regionsChihuahuan DesertGeneralists

Bronzed Cowbird in Chihuahuan Desert has fallen sharply: down 52% on the route-weighted index since 1983.

-52%Since 1983
29Routes In Region
38Years

Notable Signals

long arc declinecomputed index

Bronzed Cowbird has fallen sharply in Chihuahuan Desert: down 52% on the route-weighted index since 1983.

Forecast

If the recent trend holds, Bronzed Cowbird in Chihuahuan Desert is projected to stay roughly flat through 2029, near 0.18 (95% range 0.00–0.77). A 5-year backtest shows a typical error of ±199.8%, with 100% of held-out values landing inside the 95% band.

+3%Change by 2029
0.18Projected 2029 index
0.00–0.7795% range
±199.8%Backtest error
19772029
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
20250.200.000.79
20260.190.000.78
20270.190.000.78
20280.180.000.77
20290.180.000.77

Routes In Chihuahuan Desert

Routes recording Bronzed Cowbird in Chihuahuan Desert.
ComstockTEXAS62017
ShafterTEXAS61985
PumpvilleTEXAS62011
ToyahvaleTEXAS52005
GirvinTEXAS32017
MarathonTEXAS32011
Van HornTEXAS32024
GageNEW-MEXICO22012
ColumbusNEW-MEXICO22013
Black GapTEXAS22013
LongfellowTEXAS22022
OzonaTEXAS22018
Bear MtnTEXAS21989
Devils R CynTEXAS22017
JornadaNEW-MEXICO12014
RodeoNEW-MEXICO12021
Bitter LakeNEW-MEXICO12016
Hatchet PeakNEW-MEXICO12007
Hot SpringsTEXAS11992
AltudaTEXAS12004
ValentineTEXAS11987
Casa PiedraTEXAS12015
CastolonTEXAS11998
PresidioTEXAS12015
Coyanda DrawTEXAS12024

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