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

White-crowned Sparrow In Great Basin

All regionsGreat BasinGeneralists

White-crowned Sparrow in Great Basin has surged: up 105% on the route-weighted index since 1970.

+105%Since 1970
93Routes In Region
56Years

Notable Signals

long arc increasecomputed index

White-crowned Sparrow has surged in Great Basin: up 105% on the route-weighted index since 1970.

Forecast

If the recent trend holds, White-crowned Sparrow in Great Basin is projected to fall about 22% by 2029 — from 1.5 in 2024 to a central estimate of 1.1 (95% range 0.00–2.4). A 5-year backtest shows a typical error of ±31.7%, with 100% of held-out values landing inside the 95% band.

-22%Change by 2029
1.1Projected 2029 index
0.00–2.495% range
±31.7%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
20251.20.002.4
20261.10.002.4
20271.10.002.4
20281.10.002.4
20291.10.002.4

Routes In Great Basin

Routes recording White-crowned Sparrow in Great Basin.
SnowdenWASHINGTON462024
KendallWASHINGTON422024
LeavenworthWASHINGTON202024
NewhalemWASHINGTON152024
ConcreteWASHINGTON122024
L. WenatcheeWASHINGTON112024
NighthawkWASHINGTON101992
IndexWASHINGTON81971
OrdnanceOREGON71973
Mt HoodOREGON72024
Dinner StaNEVADA61993
PaisleyOREGON62024
RonaldWASHINGTON62024
Blewett PassWASHINGTON62024
LeadoreIDAHO52024
LakeviewOREGON52024
E. Mt. AdamsWASHINGTON52024
BridgeportCALIFORNIA41973
Deep SpringsCALIFORNIA42019
DuboisIDAHO41970
Wizard FallsOREGON42024
Calico SprNEVADA31973
Dobbin CreekNEVADA31996
Ruby ValleyNEVADA32001
BlitzenOREGON31980

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