BirdAnalyst
Species · BCR 16 · BBS 2025 Release · 1966–2024

Hepatic Tanager In Southern Rockies / Colorado Plateau

All regionsSouthern Rockies / Colorado PlateauGeneralists

Hepatic Tanager in Southern Rockies / Colorado Plateau has fallen sharply: down 72% on the route-weighted index since 1975.

-72%Since 1975
17Routes In Region
45Years

Notable Signals

long arc declinecomputed index

Hepatic Tanager has fallen sharply in Southern Rockies / Colorado Plateau: down 71% on the route-weighted index since 1975.

Forecast

If the recent trend holds, Hepatic Tanager in Southern Rockies / Colorado Plateau is projected to stay roughly flat through 2029, near 0.05 (95% range 0.00–0.18). A 5-year backtest shows a typical error of ±108.8%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029
0.05Projected 2029 index
0.00–0.1895% range
±108.8%Backtest error
19692029
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
20250.060.000.18
20260.060.000.18
20270.050.000.18
20280.050.000.18
20290.050.000.18

Routes In Southern Rockies / Colorado Plateau

Routes recording Hepatic Tanager in Southern Rockies / Colorado Plateau.
PecosNEW-MEXICO42017
La CienegaNEW-MEXICO32019
Horse SpgsNEW-MEXICO32023
ClaunchNEW-MEXICO21999
GallinasNEW-MEXICO22021
Bluewater LakeNEW-MEXICO22021
Angel Fire 2NEW-MEXICO22018
SawmillARIZONA12010
WalsenburgCOLORADO12018
LudlowCOLORADO12009
Ojo SarcoNEW-MEXICO11997
Fence LakeNEW-MEXICO12023
Horse MtnNEW-MEXICO12021
Mt. TaylorNEW-MEXICO12012
VallecitosNEW-MEXICO12023
Claunch 2NEW-MEXICO12024
Mt. Taylor 2NEW-MEXICO12024

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