BirdAnalyst
Species · BCR 9 · BBS 2025 Release · 1966–2024

Spotted Towhee In Great Basin

All regionsGreat BasinGeneralists

Spotted Towhee in Great Basin has surged: up 308% on the route-weighted index since 1970.

+308%Since 1970
179Routes In Region
56Years

Notable Signals

long arc increasecomputed index

Spotted Towhee has surged in Great Basin: up 307% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Spotted Towhee in Great Basin is projected to rise about 32% by 2029 — from 3.5 in 2024 to a central estimate of 4.6 (95% range 3.3–5.9). A 5-year backtest shows a typical error of ±23.1%, with 80% of held-out values landing inside the 95% band.

+32%Change by 2029
4.6Projected 2029 index
3.3–5.995% range
±23.1%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
20254.43.15.7
20264.53.25.8
20274.53.25.8
20284.63.35.9
20294.63.35.9

Routes In Great Basin

Routes recording Spotted Towhee in Great Basin.
Lake ChelanWASHINGTON592024
LeavenworthWASHINGTON582024
SnowdenWASHINGTON542024
HawthorneNEVADA442001
Fish CreekNEVADA352021
AustinNEVADA352018
KendallWASHINGTON312024
BartleCALIFORNIA302021
TionestaCALIFORNIA242021
ArdenvoirWASHINGTON241987
TwispWASHINGTON212024
GardnervilleNEVADA182012
Mt HoodOREGON182024
NewhalemWASHINGTON182024
MazamaWASHINGTON182022
WillisNEVADA172024
Carson RiverNEVADA162002
Fall River MillsCALIFORNIA152011
NewcastleUTAH152022
L. WenatcheeWASHINGTON152024
Humboldt NfNEVADA142019
ConcreteWASHINGTON142024
Badger CreekOREGON132024
NighthawkWASHINGTON132024
NubieberCALIFORNIA122018

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