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

Hepatic Tanager In Chihuahuan Desert

All regionsChihuahuan DesertGeneralists

Hepatic Tanager in Chihuahuan Desert has collapsed: down 78% on the route-weighted index since 1974.

-78%Since 1974
10Routes In Region
46Years

Notable Signals

long arc declinecomputed index

Hepatic Tanager has collapsed in Chihuahuan Desert: down 78% on the route-weighted index since 1974.

Forecast

If the recent trend holds, Hepatic Tanager in Chihuahuan Desert is projected to rise about 358% by 2029 — from 0.07 in 2024 to a central estimate of 0.32 (95% range 0.00–0.69). A 5-year backtest shows a typical error of ±860%, with 0% of held-out values landing inside the 95% band.

+358%Change by 2029
0.32Projected 2029 index
0.00–0.6995% range
±860%Backtest error
19702029
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
20250.310.000.68
20260.310.000.68
20270.320.000.69
20280.320.000.69
20290.320.000.69

Routes In Chihuahuan Desert

Routes recording Hepatic Tanager in Chihuahuan Desert.
Capitan Mtn.NEW-MEXICO32017
Bear MtnTEXAS32012
CloudcroftNEW-MEXICO22017
CarrizozoNEW-MEXICO12024
PinonNEW-MEXICO12024
QueenNEW-MEXICO12021
ValentineTEXAS11987
ToyahvaleTEXAS12013
Salt FlatTEXAS12014
Chisos BasinTEXAS12023

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