BirdAnalyst
Species · BCR 22 · BBS 2025 Release · 1966–2024

Savannah Sparrow In Eastern Tallgrass Prairie

All regionsEastern Tallgrass PrairieGrassland birds

Savannah Sparrow in Eastern Tallgrass Prairie has collapsed: down 79% on the route-weighted index since 1968.

-79%Since 1968
172Routes In Region
58Years

Notable Signals

long arc declinecomputed index

Savannah Sparrow has collapsed in Eastern Tallgrass Prairie: down 79% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Savannah Sparrow in Eastern Tallgrass Prairie is projected to fall about 15% by 2029 — from 0.68 in 2024 to a central estimate of 0.58 (95% range 0.00–1.8). A 5-year backtest shows a typical error of ±30.3%, with 100% of held-out values landing inside the 95% band.

-15%Change by 2029
0.58Projected 2029 index
0.00–1.895% range
±30.3%Backtest error
19662029
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
20250.740.001.9
20260.700.001.9
20270.660.001.9
20280.620.001.8
20290.580.001.8

Routes In Eastern Tallgrass Prairie

Routes recording Savannah Sparrow in Eastern Tallgrass Prairie.
RaymondWISCONSIN292024
ClaytonILLINOIS242019
NewportOHIO201994
CosmosOHIO151999
Ash CreekMINNESOTA122024
Witts StationINDIANA102024
HarristownILLINOIS92019
MuncieINDIANA91997
TecumsehOHIO91982
Cedar ValleyIOWA81997
River FallsWISCONSIN82024
AldenILLINOIS72023
W CarrolltonOHIO72008
OlneyILLINOIS61970
Troy GroveILLINOIS62012
FrontenacMINNESOTA62023
KunkleOHIO62024
RobinsonILLINOIS52023
ExlineIOWA52006
PiersonIOWA52012
GeneseoILLINOIS42021
CaledoniaILLINOIS42024
JamestownINDIANA42024
KokomoINDIANA42024
CubaINDIANA42021

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