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

Loggerhead Shrike In Chihuahuan Desert

All regionsChihuahuan DesertGeneralists

Loggerhead Shrike in Chihuahuan Desert has fallen sharply: down 52% on the route-weighted index since 1969.

-52%Since 1969
50Routes In Region
57Years

Notable Signals

long arc declinecomputed index

Loggerhead Shrike has fallen sharply in Chihuahuan Desert: down 52% on the route-weighted index since 1969.

Forecast

If the recent trend holds, Loggerhead Shrike in Chihuahuan Desert is projected to stay roughly flat through 2029, near 1.6 (95% range 0.00–4.3). A 5-year backtest shows a typical error of ±38.1%, with 100% of held-out values landing inside the 95% band.

-5%Change by 2029
1.6Projected 2029 index
0.00–4.395% range
±38.1%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
20251.90.004.5
20261.80.004.4
20271.70.004.4
20281.70.004.3
20291.60.004.3

Routes In Chihuahuan Desert

Routes recording Loggerhead Shrike in Chihuahuan Desert.
CornudasTEXAS112018
OzonaTEXAS102021
Chisos BasinTEXAS92019
RoswellNEW-MEXICO82023
LakewoodNEW-MEXICO82021
Sunshine WllNEW-MEXICO82024
CastolonTEXAS82019
San AntonioNEW-MEXICO71977
DemingNEW-MEXICO71975
Coyanda DrawTEXAS62024
MarathonTEXAS62023
Capitan Mtn.NEW-MEXICO52017
ColumbusNEW-MEXICO52024
Black GapTEXAS52022
ValentineTEXAS51987
Delaware CrkTEXAS52015
Bitter LakeNEW-MEXICO42023
Red RockNEW-MEXICO42023
Lake ValleyNEW-MEXICO42024
Van HornTEXAS42024
GageNEW-MEXICO32024
Quitman Canyon 2TEXAS32024
JornadaNEW-MEXICO22024
MesillaNEW-MEXICO22000
PinonNEW-MEXICO22017

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