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

Savannah Sparrow In Great Basin

All regionsGreat BasinGrassland birds

Savannah Sparrow in Great Basin has surged: up 92% on the route-weighted index since 1970.

+92%Since 1970
200Routes In Region
56Years

Notable Signals

long arc increasecomputed index

Savannah Sparrow has surged in Great Basin: up 92% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Savannah Sparrow in Great Basin is projected to rise about 30% by 2029 — from 3.6 in 2024 to a central estimate of 4.7 (95% range 2.8–6.7). A 5-year backtest shows a typical error of ±44.7%, with 80% of held-out values landing inside the 95% band.

+30%Change by 2029
4.7Projected 2029 index
2.8–6.795% range
±44.7%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
20254.62.76.6
20264.62.76.6
20274.72.76.6
20284.72.86.6
20294.72.86.7

Routes In Great Basin

Routes recording Savannah Sparrow in Great Basin.
ZumwaltOREGON552005
EwanWASHINGTON502019
AsotinWASHINGTON462024
Modoc PointOREGON432018
Bear RiverUTAH402023
DorrisCALIFORNIA382019
ReardanWASHINGTON382024
PicaboIDAHO362021
MaldenWASHINGTON362024
PrincetonOREGON351985
OdessaWASHINGTON312024
CallaoUTAH302024
Modoc Point 2OREGON292024
Crowley LakeCALIFORNIA252024
Green Mtn.OREGON232023
KeystoneWASHINGTON212024
WilburWASHINGTON202024
BlitzenOREGON181993
Ewan 2WASHINGTON182024
HarringtonWASHINGTON172012
ChinchaloOREGON162024
LikelyCALIFORNIA152024
JoelIDAHO152024
BickletonWASHINGTON152015
MacdoelCALIFORNIA132019

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