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

Green-tailed Towhee In Northern Rockies

All regionsNorthern RockiesGeneralists

Green-tailed Towhee in Northern Rockies has risen sharply: up 72% on the route-weighted index since 1970.

+72%Since 1970
117Routes In Region
56Years

Notable Signals

long arc increasecomputed index

Green-tailed Towhee has risen sharply in Northern Rockies: up 72% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Green-tailed Towhee in Northern Rockies is projected to rise about 21% by 2029 — from 2.5 in 2024 to a central estimate of 3.1 (95% range 1.2–4.9). A 5-year backtest shows a typical error of ±21.7%, with 100% of held-out values landing inside the 95% band.

+21%Change by 2029
3.1Projected 2029 index
1.2–4.995% range
±21.7%Backtest error
19682029
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
20253.01.24.9
20263.01.24.9
20273.11.24.9
20283.11.24.9
20293.11.24.9

Routes In Northern Rockies

Routes recording Green-tailed Towhee in Northern Rockies.
SaveryWYOMING421995
Rock SpringsWYOMING372022
Great DivideCOLORADO212024
AnchorWYOMING212018
WoodruffUTAH202024
MooseWYOMING202024
Big SandyWYOMING202023
RandolphUTAH192024
Crawford MtsUTAH192023
Rock Springs 2WYOMING192024
Colter Bay 2WYOMING182024
Savery 2WYOMING172024
WalcottWYOMING162024
CumberlandWYOMING152024
Pryor Mtn.MONTANA132024
BoulderWYOMING132024
RelianceWYOMING132018
MoranWYOMING132016
MeeteetseWYOMING122024
AlpineWYOMING112024
Ne EntranceWYOMING102021
MammothWYOMING102024
MaybellCOLORADO92024
E. Bear LakeUTAH92022
DonnellyOREGON82006

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