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

Eurasian Tree Sparrow In Eastern Tallgrass Prairie

All regionsEastern Tallgrass PrairieGeneralists

Eurasian Tree Sparrow in Eastern Tallgrass Prairie has surged: up 707% on the route-weighted index since 1969.

+707%Since 1969
59Routes In Region
57Years

Notable Signals

long arc increasecomputed index

Eurasian Tree Sparrow has surged in Eastern Tallgrass Prairie: up 706% on the route-weighted index since 1969.

Forecast

If the recent trend holds, Eurasian Tree Sparrow in Eastern Tallgrass Prairie is projected to fall about 23% by 2029 — from 0.94 in 2024 to a central estimate of 0.73 (95% range 0.34–1.1). A 5-year backtest shows a typical error of ±33.1%, with 60% of held-out values landing inside the 95% band.

-23%Change by 2029
0.73Projected 2029 index
0.34–1.195% range
±33.1%Backtest error
19672029
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
20250.680.301.1
20260.690.311.1
20270.700.321.1
20280.710.331.1
20290.730.341.1

Routes In Eastern Tallgrass Prairie

Routes recording Eurasian Tree Sparrow in Eastern Tallgrass Prairie.
CameronILLINOIS192024
West LibertyIOWA182024
Terre HauteILLINOIS142024
ConcordILLINOIS142023
GreenviewILLINOIS142024
WilliamsfldILLINOIS122024
BudaILLINOIS102023
BelleviewILLINOIS92024
SherrardILLINOIS92024
KeithsburgILLINOIS92022
RensselaerMISSOURI82019
Duncan MillsILLINOIS72024
Kahoka2MISSOURI72024
ChandlervillILLINOIS62024
AthensILLINOIS62016
MillwoodMISSOURI62024
Mill CreekILLINOIS52023
PutnamILLINOIS52024
ClaytonILLINOIS52024
EubanksILLINOIS52024
AtkinsonILLINOIS42024
Camp PointILLINOIS42024
WilliamsburgIOWA42023
Deer CreekILLINOIS32024
St MorganILLINOIS32009

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