BirdAnalyst
Species · BCR 19 · BBS 2025 Release · 1966–2024

Chihuahuan Raven In Central Mixed Grass Prairie

All regionsCentral Mixed Grass PrairieGeneralists

Chihuahuan Raven in Central Mixed Grass Prairie has surged: up 208% on the route-weighted index since 1974.

+208%Since 1974
20Routes In Region
49Years

Notable Signals

long arc increasecomputed index

Chihuahuan Raven has surged in Central Mixed Grass Prairie: up 208% on the route-weighted index since 1974.

Forecast

If the recent trend holds, Chihuahuan Raven in Central Mixed Grass Prairie is projected to fall about 18% by 2029 — from 0.30 in 2024 to a central estimate of 0.24 (95% range 0.00–0.49). A 5-year backtest shows a typical error of ±70.1%, with 80% of held-out values landing inside the 95% band.

-18%Change by 2029
0.24Projected 2029 index
0.00–0.4995% range
±70.1%Backtest error
19712029
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
20250.240.000.48
20260.240.000.48
20270.240.000.48
20280.240.000.49
20290.240.000.49

Routes In Central Mixed Grass Prairie

Routes recording Chihuahuan Raven in Central Mixed Grass Prairie.
ClarendonTEXAS182021
WilliamsTEXAS82024
EldoradoTEXAS61977
LakeviewTEXAS52024
Pear ValleyTEXAS42014
WeinertTEXAS31994
HaskellTEXAS32024
GirardTEXAS32023
CoatsKANSAS21989
GraybackTEXAS22021
MertzonTEXAS22011
HackberryTEXAS22024
RotanTEXAS22024
Shields 2TEXAS22023
GrimesOKLAHOMA11984
ErickOKLAHOMA11988
WinchellTEXAS11974
ChildressTEXAS12023
WallTEXAS12017
SilverTEXAS12016

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