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

Great-tailed Grackle In Chihuahuan Desert

All regionsChihuahuan DesertGeneralists

Great-tailed Grackle in Chihuahuan Desert has surged: up 14× on the route-weighted index since 1970.

14×Since 1970
37Routes In Region
54Years

Notable Signals

long arc increasecomputed index

Great-tailed Grackle has surged in Chihuahuan Desert: up 14× on the route-weighted index since 1970.

Forecast

If the recent trend holds, Great-tailed Grackle in Chihuahuan Desert is projected to rise about 93% by 2029 — from 2.4 in 2024 to a central estimate of 4.7 (95% range 3.1–6.4). A 5-year backtest shows a typical error of ±31.6%, with 80% of held-out values landing inside the 95% band.

+93%Change by 2029
4.7Projected 2029 index
3.1–6.495% range
±31.6%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
20254.42.76.1
20264.52.86.2
20274.62.96.2
20284.63.06.3
20294.73.16.4

Routes In Chihuahuan Desert

Routes recording Great-tailed Grackle in Chihuahuan Desert.
Bitter LakeNEW-MEXICO312023
JornadaNEW-MEXICO172024
CanutilloTEXAS172024
ToyahvaleTEXAS132018
Ft. StocktonTEXAS122024
San AntonioNEW-MEXICO101977
LaborcitaNEW-MEXICO102019
ComstockTEXAS72023
DemingNEW-MEXICO61974
Quitman Cyn.TEXAS52009
Laborcita 2NEW-MEXICO42024
Sierra BlancTEXAS42024
MarfaTEXAS42023
GageNEW-MEXICO32024
MesillaNEW-MEXICO32000
PinonNEW-MEXICO32009
ColumbusNEW-MEXICO32024
MarathonTEXAS32023
Quitman Canyon 2TEXAS32024
RodeoNEW-MEXICO22024
Red RockNEW-MEXICO22012
Hatchet PeakNEW-MEXICO22024
LongfellowTEXAS22021
Delaware CrkTEXAS22009
Devils R CynTEXAS22013

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