BirdAnalyst
Species · BCR 10 · BBS 2025 Release · 1966–2024

Lesser Goldfinch In Northern Rockies

All regionsNorthern RockiesGeneralists

Lesser Goldfinch in Northern Rockies has surged: up 395% on the route-weighted index since 2005.

+395%Since 2005
11Routes In Region
21Years

Notable Signals

long arc increasecomputed index

Lesser Goldfinch has surged in Northern Rockies: up 395% on the route-weighted index since 2005.

Forecast

If the recent trend holds, Lesser Goldfinch in Northern Rockies is projected to fall about 35% by 2029 — from 0.11 in 2024 to a central estimate of 0.07 (95% range 0.01–0.13). A 5-year backtest shows a typical error of ±75.6%, with 20% of held-out values landing inside the 95% band.

-35%Change by 2029
0.07Projected 2029 index
0.01–0.1395% range
±75.6%Backtest error
19842029
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
20250.060.010.12
20260.060.010.12
20270.070.010.12
20280.070.010.12
20290.070.010.13

Routes In Northern Rockies

Routes recording Lesser Goldfinch in Northern Rockies.
TwickenhamOREGON62024
MonumentOREGON52024
MadrasOREGON32024
MeeteetseWYOMING32018
WoodruffUTAH22023
Mtn ViewWYOMING22016
Browns ParkCOLORADO11993
Summit PrOREGON11984
NewbridgeOREGON12024
WalcottWYOMING12017
SeedskadeeWYOMING12023

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